"'1) ':7"" U ISS ION NO. ,-. FLO WN 7 A U G 1945 COP Y NO. ~ HEADQUARTERS TWENTIETH ,.A IR FORCE O 1 .. ·l
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"'1)
' : 7 " "U IS S IO N N O . , - .
F L O W N 7 A U G 1 9 4 5
C O P Y N O . ~
HEADQUARTERS
T W E N T IE T H , .A IR F O R C EAPO 114
. .·l
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E E l , D c U l o. R! !' ER S
TIiENTIEl'H AIR FaRCE
APO 234
TAQTICAL MISSION REPrn.T
Field Order No. 15 Mi.ssion No. 317
Target : Toyokswa Naval Arsenal (90,21-1653)
7 August 1'945
Tableo! Contents
Tactical Narrative. , . . . . . . . i I , . . . , . ' · · . . · ~AnneXli- Operations. • • ••
Part I _ Navigation Track Chart and.Report,
Part II _ Mean Points of Impact • • • • ••
Pert II I _. Bomhing. • • • • • • • •. • .• • • .• • •Part IV _ Flight Engineering Chart and.Report • •
. . . " . .Part V - Rad.ar., • , • • • , • •
Part VI - Gunnery • •. • • • • •Part VII - Air-Se8 Reacue ChartPart VIII ._VII .Fighter command
Mission Report,
Consolidated
Annex B ...Vieather • '. • .. • • .. i. • ., • II • . ,. .... • •
Part I _ Weather S1.MIl!1Isry.• •Part II _ Chart _Fo recas t \Jetlther va.
Observed Weather ., • • • • •
part III - ]"rogn0stic:: ]rep • • • • • • • •••
Part IV - SYl'l0ptic MaJ;l. • • • • •
.. ... .. Ii •
.hnnex C - C OI!II11' l!1nications. , • • • "Part I -Radar Counter Measures •
Part II- Radio • •. . . ,. . . .
Annex D ._ lnt.elligence.. • • •• • .,.. • ••• , •••
Part I _ EnemyAir Oppositi ot:]. • • • • • • • • • •
Part II -Enemy il.n'tia it'craft. • • • •
Part III - Strilte Attack Report • • • • • • •
1
78101112
141 51 6
17
20:a
22
2 324
2 52 628
30313133
Ann.I>X : E . . OORl:lolidated Statistical Summary. , •• • • • •• 41
An .n6X F .. Twentieth kir Foree Field order •. .
.annex G .. Distribution List • • • • . • • • .. . I I i i. .
Prepa red By:
li.-2 Section
Twentieth Air Force
51
55
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SECRET
,ByAuth. of the cn20th Air Force
-r-c-B/U45 /J .'0. ~ .Dat~ Ini~ials. . . . ~ . . . . .. . . . . . . . .
HEAD~DARTERS
TWENl'IETH AIR FORCE
APO 23 4
SUBJECT: Report of Attack Against the ToyokawaNaval Arsenal on
Honshuon 7 August, 1945.'
TO CommandingGeneral, U.S. Ar~ Strategic Air Force, APO234.
San Franciso::; Calif arnis
1. IDENI'IFICATIONFREPORT:
a. Target Attacked: The ToynkawaNaval Arsenal (Target 90.21-
1653) near Toyohashi on the Island of Honshu.
h. ' Force Attacking: A normal effort of 1 Group each, c9nsist-
ing of 3 squadr-ons, from the 58th I 73rd. 3l3th and 314th Bombardment
Wings were to attack the target.
c. Directive: Field Order Nu~ber 15, Headquarters TwentiethAir Force , dated 6 August 1 9 4 5 . directed the attack against this target.
2. MISSION PLANNING:
a. Selection of Target:
(.1) Targets Cons.idered : The targets considered were those
that had been Singled out for daylight precision attacks when weather
would perm.it such strikes. The target selected had to be limited to 1
for attack by a force equiva Lerrt to a single wing due to the fact that
this mission immediately followed a maximumeffort night strike"
(2) -Target Selected and Reasons: The Toyokawa Navel k-
senal (Target 90&21-1653) was sele~ted for atta~k on the basis of a
favorable weather prediction for the Nagoya Area.
(3) Secondary Visual and Radar Target; The Yokosuka A.ir-
craft Factory and Research Center at YokosuKa (Target 9 0 0 1 7 - 1 3 9 2 ) was
selected in the event that weather conditions w~uld prevent visual bomb-
ing.
b. Importance of Target: The Toyokawa Naval Arsenal. located
in the Toyo River Valley about 37 miles southeast of Nagoya Castle and
4.5 miles north of Toyohashi. is the NUlJ1ber1 producer of naval al!J1lUD-
ition and 1 of the 10 major naval arsenals in Japan. Its products in-
clude machine guns. antiaircraft weapons, rifles. a ircraft cannon and
ammunition. It covers an area of 20.200,000 square feet with 18 per cent
of that area consisting of built -up s tr-uct.ur es , The principal buildings
are of steel construction having saw-tooth t 'pe of roofs.
c. Time Fact ors :
(1) Selection of D-Day: D-Day was selected on the basis
of a favorable weather forecast presented for the area in which the target
"as located.
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en bi (2) Selection o~Target Time: Target time was selected to.s e the B-29's to assemble at Iwo Jima and rends-zvouswith friendlyf~ghterB Bnd still hit the target as early as possible in the morning.
d. Munitions and Fuel Loading:
(1) Selection of Bombsand Fuzes:
(a) 1t~uniions :
~. All Groups were to carry the 500-pound generalpurpose bomb.fuzed W~ th 1/10 and 1/100 second delay nose and non-delayta il. The 314th VIing was to be the only wing that would use the 1/10
second delay nose fuze due to the unavailability of the 1/100 seconddelay nose to be used by the other n-ings.
2. The bombsselected Vlerebased on the factthat the target COVers;- large area end is made up of both storage and
manUfacturing installations. The buildings in the production sectionare small in plan areas and are dispersed ~ Throughout the target these
buildings are principally saw-tooth roof and short span construction notsubject to spreading collapse. The300-pound bombwas selected for thereason that the multiple number of direct hits obtainable would have thebest chance of inflicting maximumdamageto these structures as well 8s
to their contents. This size bombwas expected to prove most effectiveagainst the storage area. since individual buildings are protected by
revetments and could only be destroyed by a direct hit wi thin the revet-ment. This could best be accomplished ,by exposing the area to a large
number of bombhits.
3.. The 1/100 second delay nese fuze was selected asit would allow bombburst 6 to 10 feet beneath the roof, thereby causing
damage to structures and building "Contents. The 1/10 second delay nose
fUze was selected as the best alternate fuze to be used by the 314th
7hng. The non-delay tail fuze Viasselected to give ground level burstto near miss bombs.
(2) BombLoading;
(a) Based on safety factors. bombload estimates for
this mission were a potential capacity of 129000 pounds each for each
Or oup of 4 . Wi~gs and an expected average of the same number of :poundsper aireraft.
(b) The potential capacities were primarily governed
by the total distance to be travelled.
(3) Ammunition Loading: Ammunition loading was to be acc-
ording to the Tactical Doctrine for daylight precision attacks.
(4) Gasoline Loadingl Fuel reserve data indicated that the
58th, 73rd. and 3l3th Wing aircraft would require a total fuel load of
7100 gallons and the 314tl:! 'JJing 108d per plane would be 7300 gallons ..
e. Flight Planning:
(1) Route:
~ Reason for Choice
Base to 1"'0 JimaAssembly Area Number1 Tactical Doctrine
to
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Reassembly o~f t he coast ofJ"apal)
toT ac ti ca l D oc tr in e
T his easily i dentified point of landin Nagoya Bey just east of ~tsuzaka
wa s selected far t he departure point.o
3 44 13 0N - l3 6583 0E (I P) This easily ident ifi ed point of land
near the cit y of Morosaki was select edfor the i nit ial point.o
Targetto
3452N - l3750Eto
This dead.reckoning point was selectedto miss the flak defenses at Hamamatsu.
I'I'7oTima to Base Tact ical Doctrine.
(2) Navigational and Radar Factors:
(a) The target is a large arsenal complex TIhichcaDbe identified as a single radar return. The straight approach frcm the
departure point to tbe target has 2 or 3 good radar check points that
could be used to kill drift and for target identification. The targetwas selected primarily for its visual references, although the radar
operator could be of assistance to the bombardier throughout the run.
(b) In the event that the secondary target had to be
bombed it is easily identified by radar since it is located on the coast
of the arrowhead shaped peninsula at 350]N - 13916Eo The secondary vis-
ual and radar target is excellent for direct synchronous radar bombin.;;
since it is located on a coastal projection on Tokyo Bay and resolves as
a Single radar return. The coast and its di.stinctive shape were expected
to aid in target identification.
(3) Assembly Points: The only radar check points are 1\70
Jima t Kita t and Minami 11."7ogThese 3 islands were to be used as assembly
areas and radar could be utilized to position the aircraft in the event
that clOUd cover existed over the area.
( J . j . ) Reassembly Areas: Twoareas were assigned for reass-
embly, one at 3325N - 13600E'and anotheJ;' at 3405N - l3620Eo The former
was expected to be excellent for radar assembly since it would utilize
a distincti~e southern tip of land and would also be an excellent point
for radar wind runs. The latter was chosen because the coastal features
could be easily identified by radar operators~
(5) Departwre Point: The departure point 7 345330N -
1363890E, was to be a good coostal check point on Is€!W5In" By making
this turn aircraft nould have a straight course fram the departure point
through tbe initial point to the target.
( 6) Initial Point: The initial point was to be easily id-entified southern pOint of the Morosaki peninsula.
f. BombingFactors: (For details of mean points of impact, see
Annex A. part II).
(1) Each of the Groupe of the 4 ,lings Vl8S called upon for
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3 Squadrons whichw0uldmakethis effort the equivalent of a normalSingle Wingattack. It was planned for 130aircraft to bomb the targeteach with an average of' 14.500 pound s (based on overall performance fig-ures) for a gross tonnage of 930 tona. Of the 930 tons. 88 per cent,o~ 818 tons, were expected to be relea sed on the primary target. Per-v~cus experi ence indLea ted thet 50 per cent. or 409 taos, TIauld fa 11'I'llthin 1000feet of the 2 assigned mean points of ilnpact. Onthe basis
of this tonnage o n the target area complete des'truction would be effected.
(2) Alt i tude end axis of attac,k selected Tlera dependent
upon the following 4 factors: (1) wind direction and velocity, (2) pos-ition of the sun at time of attack. (3) flak conditions at the target.and (4) selection of easily identified initial points, both by visualand radar means. The following pertinent bombinginformation was select-ed on basis of the heretofore mentioned considerations: bcmb i.ng altitude,
15.000 and 17,000 feet; axis of attack, 68 degrees true; length of run,27 miles; time of run,S minutes and 15 to 40 seconds and. drift. 2 to2k degr'ees right.
(3) MeanPoints of Impact: The 2 mean points of impactselect ed , 1 in tbe eest area a nd the other in the west ar sa of the south
section of the plant, included all of the 3 units in the south section anda considerable portion of the northern storage area uithin e. probably cir-
cular error of 1500 feet.
U~) Secondary Targets t Because of Toyokawal\1avalArsenal
was not considered a good radar target. the secondary target at Yokosuka
was deSignated as primary radar and secondary visual. This target isapprOXimately 135 miles from the primary and there Vias even the possibility
that in the event that clouds obscured the primary, the secondary \lould be
open for vis1!l.a1bombf.ng , In the event visual bcrnbine;was not possible at
the secondary target it was considered a good radar target.
g. Defensive TacticE;
(1) Fighter Escort: 'fuo proups of 1'1>0 Ji.l:l:!a based fighters
were to provide the following escort:
(8) One Group was to rendezvous with B-29's at the
departure point at 070l00Z at 17,,000 feet to escort the bombers through
the pr imary vi sua1tal' get ar ea~
(b) The second group was to arrive at 3503N-13906E(which was to be the initialp8iXl.'; for the secondar-y visual target) at
21,000 feet at 0601.30Z, fly r n the area until O'sJ1,'IOZo escort the bombers~
If no bombers appeared. they riel'S then to g,J into the ~el.;on;:'"8ry:..~eaand
strafe.
(2) ~ The!"e are 22 heavy 8"n5 in the Toyohashi area,
and aircraft were expect ed t') be wi thin range of 12 of these on t.ueplanned approach to the targe"l;. This I~as conarder-ed a Wef.l_Lcefcl"'~e and only
meager flak was anticipated 0 The doon-wind axis of attack rra s p:!.ennedfrom
the west. The route to the initial point was expected to bring aircraft
barely within range of the 18 heavy gwns at Ujiyamada. Fallowing bombs
away, aircraft were to break away to the northeast and around the Hamamatsudefenses to land's end. The base altitudes specified, 15,000 and 17,000
feet, were expected to be beyond the optimum range of the flak effs'cti ve-
ness. In the event that the secondary target was attacked, the B,-29's
would be within range of 10 guns at Hiratsuka and apprax:iIr.ately 106 guns at
Yokosuka. For this reason, a ircraft were instructed to increase their
altitude by 4000 feet if the secondary were attacked.
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(3) ReM: All squadrons were to be equipped to barrage jam
enemygun-laying ~rs in the 72 to 84 and 190 to 210 megacycleregions.;~ot jammingwas to be employedagainst gun-laying signals appearing out-1de the bar:rage. Search for enemyradars from 20 to 3000 meg,9cycleswasto be continued.
(4) EnemyAir Opposition: •
. (a) It was anticipated that 20 to 30 enemyfightersm
7ght offer opposition in the Toyokawaarea. A possible
5to 10 add-
t10nal interceptors were expected to pick up the B-29 stream and paceit in the bay area south of Nagoya. In the Tokyoarea a possible 40 to50 fighters were expected to intercept the B-29's if there were unableto bombToyokawaand proceeded to Yokosuka.
(b) Onthe basis of the above considerations, '2 groupsof fighter escorts were to be used as outlined above,
h. Air-Ses Rescue: The Navywas given deta ils of this missionand provided the air-sea rescue facilities shown on the chart in Anney.A,Part VII I "Whichalao ahCl¢!he facilities provided by the Tv!entieth AirForce.
3. EXECUTION OF THE MISSION:
a4
Take-off:
(1) Aircraft of the main bombingforce took off as [ollems:
~ Aircraft First Take-off Last Take-off
Airborne
58th 32 061750Z 061819Z
73rd 31 061810Z 061825Z
313th 35 061754Z 061828Z
314th -1L 0617h.OZ 061809Z
Total 131* 061740Z 061828Z
"'This total does not include 4 Super Dumboand 1 'Hi.ndRun Aircraft.
One airQraft of the 313th Wingwas to serve as a weather ship at theassembly point. It caFried a full bomb Load ,
(2) A total ef 104 fighters of the VII Fighter GOlPmand
Were airborne fran Iwo Jima at 0622l2Z.
b. Route Out: Long range naviga.t ion nas accomplished by indiv-
idual aircraft to the formation assembly point. No navigation difficul-
ties were reported and no aire:c'aft failed to bomb the primary target
because of navigational error.
c. Assemblies:. The fighter Gr:oupreaehed the dep!lr~ll.re pornt a
few minutes before the B-29IS• The 3 fighter squadrons fle\, escort ao
16ro o o . 17.000 and 19.000 feet and the lead bombers TIere escorted to the
target end 10 miles beyond. 'Dhis escort continued until the last bomber
had gone over the target.
d. Targets:
(1) Primary: Radar was used as an aid for navigation and
for wind determination in the target area D G.oodvisibility permitted
Tisual banbing. Wind in the target area was from 100 degrees at 15 knots.
All 124 aircraft bombing hit the primary target, dropping a total of
813.3 tons of bombs fran 070113Z to 070139Z at altitudes ranging from
1 6.0 00 t o 23.600 feet.
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(2) Target of Ouport"ni ty; One aircraft, which also bombedthe primary target, dropped 3 •5 tons of bombs on Futamata a.t 070132Z
from 15,500 feet.
(3 ) Fighters~ Of the 10 4 fighters that were scheduled to
gi ve e scor t, 97 reached the target ~rea.
ea. Remai nder of Farce: Seven airoraft were non-effect ive.
1'. Route &leis: The returns to b ases we re f'lO'>"1Ils briefed.With the exception of 7 B-29's that landed at IV/o JimB..
g landing: Aircraft of the main force landed in shOl'lera at
bases as follows:
'iring lll'"stl&!,lldinS last Lani;i.O!s
58th 070735Z 070835Z
73 rd 070707Z 070822Z
31 3t b 070712Z 070824Z
31 4t h O707?9Z 0:Z080 9 Z
Total 070707Z 070835Z
h. Loss and Damageto Aircraft:
(1) One B-29 of the 313th '1lingwas hit by flak over the
target and the 11 crew memberswere forced to bailout over 1"110 Jima.
because the damage prevented control of th~ aircraft. All 11men ~ere
rescued.
('.2) Twenty-one B-29 IS were damaged by flak.
(3) One fighter was lost en route to·the targeto The pilot
parachuted safely and was picked up by an Air-Sea Rescue vessel~
1. Ex:ecution Versus Planning_~ There were no major differeroes
between the planning and execution of this mission.
4.RESULTS OFTHE ~rDSSION: (For detailed speoialist's reports of
this mission. see·annexes that follow tmis narrative).
a. Nodamage assessment is available on this target et the
writing of this re~ort Ihowever I strike atta·ok photography ind icated
that of the 3 2 3 6 bombs·dropped , 1290 ( 3 9 . 7 per cent) hit within 1000feet of the mean point of impact.
. .-"
~~" ;..4 =-r.. N. F. TIHNING I
Lieutenant General, U ~ _ § , 4 A .,
Commanding
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A
OPERATIONS
Part I ~ N3.viga.t.ionTrack Chart and ReportPart II ~ Mean Pointe of Impa,ct
Part In • Bcmbi.ngPart IV • Flight Engineering Chart and Report
Part V- Radar
Part VI - GurrneryPart VII - ,Ajr..$ea Rescu.e Chart
Part VIII _ VII Fighter (3cmrlJ,Sl,ndOIl!3olidotedMission
Report
Mission No. '317
7 August 1943
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EAF .l.T I - ~_Y]igA 'rI O N
1•. Longrs.nge aavigat ion was accomplished by indi vidu('ll aircraftto the fOl>ll!ation assembly points. The targst attacked was Toyokavla
i;.~al ~rsenal. , , : i t h ]!iiquadrons each from the 58th ~ 73rd 0 313th• and- 4thW .J.n,ga partlcipa.ting. No .navigation diffisultv,s were reportedand no aircraft failed to bomb the primary target becauae of navigationerror.
_ 2. Radar was used a .s an aid for naVigation and fo·r win.d. d.etermin-,
at ion in the target, area., Goed visi bill ty permitted visual bombing inall but one esse., Wind in the targst ares was from 1000 at 15 k,nots.
3. The returns tOMse were as briefed, 'with 7 aircraft landingat Iwo .Tima.
4 . loran work on this mission wa,s as fol1cms:
a • Number Lora n LOP's: 1939b. Number loran FiX-e,a: 917c. Number Equipment Ms.li'un.ctons: 15
d. Average Ji lEx i roum Range: (i n nautical miles):
(1) Fixed Antennae 600
(2) Trailing 'l,iire 650e. No int er:fer ence or jammingwa s reported. Het\ge5 gi ven
ground -r.'aVeS since this 1;;8.8 8 daylight precision. missionGere :for
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1945SECR£TPART L NAVIGATION
145"35·
MISSION NO 317
DATE 7 AUG '45
G
----1--5•LEGEND
_________ .\~~~~ WI~G
------ 31311'1 II
_. ->:i--:X-!314Ih "
\
\
IIII
----t-ISSION317 MISSION317
"~
OKINAWA
::: :>
= ,
"--C §.-2.5 e ?
~ ~. . .
f i > -
i t
.r.J
. . .=
a e!:
581h WING 73rd WING
TAKeo~~ 061750l TAKEO~F0$18101
_ 061BI9l 061825l
LANDFAl.l.070112!
LANDFAl.L07010B!
07G124i! 070118l
TARGET 0701232 TARGET 070126!070134b- 07Q131i!-
LAND'S END07QI34t
l.ANe'S END070132Z
070148i! 07014~
LANDING070735l
LANDING0107072
20°--070835Z 070822l
MISSION 317 MISSION 317
313111WING 314'1'1WING
TAKEOFF06175~1 TAKEOFF 0617401061828l! 061809!
LANDFAl.L070055Z 0700481070103t LANDFALL 0700592
TARGET070126Z
TARGET010113l
070139l 070124r
LAND'S END070141Z
LAND's END0?0122E
070150l 070136l
15°- ----LANDING 0707121 07072;9'["070824Z LANDING
070809l.
TR A CK CHA AT
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MEAN P I r - . . I T S OF IMPACT
•MPI WINGS
~
58th. a 313th.
73rd_8314th.
SECRET
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PART III - BOMBING
1__ The Toyoke'l'ls Naval il:r,senal wa,s attack,sd by . '3 squadrons each
from the 58th .'7Jrd. Jl}lth. and ,J141;hWings 0,
. 2. The l'1eatberin the target area was CAW and all format ions made
:J.SUB1 runs. The lead bombard,iers of the format iens thstbG1llbed latet-Bd t~ ~se referenoe point bombing pr-os edur'e to sight on the t,arget as
_he aunlng point wa,s obscured by dense smoke.
J. The mission was I:onsidered ElXl!lellently planned. The averagedrift reported wes2 degrees left. Compressibility for the force was
26 minutes.
q.. Th e bombing acc ur'a cy wea good , w itb 39.7 per cent o. f all
bcmbs being releaBedwithin 1000 feet of the meenpoints of impaat"
To,e c.leaz- weather was the greatest factor contributing to the suecese
of this mission.
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. . , : ~ , . - ' ' ; J , ! ? f t ; - . . . ~i ; 1<', , ' . """ rh ,Y")d '"""~.".,,,
: : : : : I~t~:~EfJ~"; ;.,: i ' · , i , , · ' · " " ." .+ ,. ." .. - 1 : ' , : , : . , . . , . · · · · ·· · t ·· · · · ·, , ·· · · · t , . ' · ·· · · · ·· · · ,\ , I . , , " . . , ~7000 + , r · · · · · .
' O P J .8
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o
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o
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........x~..~ . ! ' :.~.x'~'1-'F"'(~. ; j . . . . .
..".,......~ : '7)"!1i-~~: "\.~: . jl .
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600
(/J/1N~5 rtf.-.~./
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PART IV - ELICHI' ENGINI»lIID
1. Narrative of the Mission as Flown;
a~ Cruise to the Maialandc Individual climbs were wade immedi-at ely . a ft er t ake-off to alt i tudeg b etween 5,000 to 90000 feet, where
the initial cruise was flown. Assemblies were made off the coast of.Tapan.
b. BombRun: Bombingwas cond~cted by squadron formations atan average altitude o f . 17.000 feet.
c. Return to Ease: Returns to the bases WEre conducted by in-
dividual aircraft vllthout difficulty. Minimumfuel was USEd byair-
planes cruising at 14,000 to 16,000 feet and descending 20 0 feet per
minute into the traffic pattern. Maximumrange speeds as specified b y
this headquarters gave the best fuel consumption.
2. Comments: Of the aircraft airborne, 5 per cent landed at I"o
.ri~. Only aircraft of the 314thl'Iing loaded a bomb bay ts.nk. If the
target at Toyokawa had been closed in end the format.iolla proceeded on
to the secondary target 1 n the Yokoauka a r e a , a large percentage of
th e 58th, 73rd and 3l3th 'hng. planes 'IV ould have had to land at IVlo
Jima for fuel.
3. Exhibi ts:
e. For historical record, see chart that precedes this page ,
b. For further information, see Annex E, Consolidated
Stat istical SUJllIJ!8ry.
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§;1!Q!!.J;:l.
PAR1' V! t . JO . 1 3 ' U N i ) 1 . E R Y' ....
1. No. of' Ale .f'irin{;p None,
2. Average turret load:
LA
1000
T .
1000
.£ E
2000
UA
1000 1000
.3. Average No. of rounds fired in combat per turret:
UF ]A ! L\
4) 0 0 0 o
4 .. No. of rounds fired in combat: None
5. No. of' rounds used, for test firing: 12,2619
6. Guna Load.ed: 58th Wing 73rdWi.ng 313th"i.!ing 314th'iing
Hot Cold Hot Cold
7~ Malfunetions; CAL. .50 M.G.
Timing off
Link Jams ~, (2)
Booster Motor
8. T o t al p er ce nt ag e o f ' e q u ip m, en t o p e ra ti ve :
O.F.O. , C A l. . • • 50 M.G.
1QO%
9. Rem.arks; There was· no gunnery activity on this mission.
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0_
PART
J
IIII
- - - - + -II
I
SECRET
AI~
\----I-
I\
IIIIIII
~--t--I
III
q706lOZ
I.~ ~;;;s~j;~ ~E~ERE
STATION DURING ENTIR, MISSION.
2. AL.L DUM'BOS AND SUP~R DUMBOS WERE TO BE.FROM TIME INDIOATq:O TO RETURN PASSAGEKE AIRORF T. I
II135-
- - NAVY OUMBO
Cl'Uh Boats on Statioll Vicin ityo r T w e n t i e t h A i r F o rc e B a s e sduring t ake -o r r and land1Dg.
I8- I05-G>4 REPRODUCED 3l5""P YU.
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PART VIII ..; CONlOOLID.i ;.TJIDMlSSION REPCBT.
HFADQ.UAHTERS VII FIGli 'JER CO]']\r lkND l o J > J 5 '
Office ot' the Cornrna.nd ing GeneTsl
Iw6 Jima
10 August 1 9 l 1 - 5
1.: a, Units and Targets: 15th FigbtosrGroup - Escort E-29s from DP tN:lgOya {~rea and
thence to lends
506th Fighter
end.
Group- ·Chofu (P). Sagrunl
(S). and A.tsugi
(lR) airfields:.
:2.. a , TyPe of Missiom Escort of E-29sover Nagoya or Tokyco•.A FightSI' Strike by one grOl!lP in event the bomber-s are not a.t their' IF.
b. Date of Missi on: 7 August 1945·
c • Field. Order No. 161.
e, VII Fight er Csmrn.sndMission No.' 257. VIR Mission No. 48.
3 . a ;. Group 15th Ftr Gp 506th Ft r G I! Totals
b. A / C scheduled 5 2 52 104-
c. A / C returned early 2 0 2
d. A / e over target area 45* 52 97
e. A/C Lost 1 0 1
f. A/C 03omp1eting mission 4 5 .5 2 97
g.. T/O last a/c off 0740 0812
h. Time RV w/nav bombers 0800 oe35
i. Time over DP 1055 1125
je " T ime of landfall 105.5 1125
k. Time ~vel' target area 1100-1145 1140 -1225---
1. Time at RP 11.501240
m. Time landed last a/c 151.5 1549
It Dispatched 48 planes, one of which went down en r-oute to th€ targEt.
4. a. Friendly aircraft losses - Total: 1; Pilots: None_
1 F-:51 VTas lost en route to the target due to a coolantleak. Pilot parachuted safely and was picked u.p in good condition by en
~SR surface vessel.
b. Friendly aircraft damaged -Total ; None •
. 5 • a. Enemy a ircra ft .S igh't ad - Air: Nona.Ground: 10.
b..Enemy airraft losses: NOlle.
c. Enemy Ground Instf:lllatioJl end. Shipping L"sses:
15th Fighter Group - None.
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bu. 506th Fighter Group - One200' freigbter exploded and ~ef~rnJ.ng, 1 Sugar Dogset afj.re, 3 Sugar Dogswere damaged. 11 fl.shl.ng
boa.~s, 3 50' trawlers and 1 30' lauDc,bwere damaged. Three steam 1000-motl.Ves. 22 freight cars, RRstation at l\I".agarimatsu,and the BRyards~nd sheds at Matsudawere strafed and damaged. 'I)/ofires ,Isre startedan stOl'age tanks ar vats at an industrial plant S of Sekimoto. ani 1building was damagedat Sakawa. Tworadio stations were damagedand 20POI" . 'er line tcwers short ci.rcuited and structurally damagedin the Sagami
valley. TWooi1 s tarage ta nka ]eft burning. 2 radar6
ta tiona damagedand1 ll.ghthouse destroyed at Noj1;. :11 Seki.
6. Narrative: 'l'I'10 fig~~'~r groups were scheduled for this mission.One group was to escort a force. of B-29s to Toyokaws, but if th is ter.getWere closed in. the bomberswere to proeeed to Yoke.llukawhere the second.fighter group was to take up the escort. If the bombers did not appearover the secondary target, this second fighter group was to strike air-
fields in the 51; Tokyo area.The escort phase of the mission was routine, with the bombers
hitting their primary target. One P-51 of the 15th Fighter Groupwaslost operationally on the way to the rendezvous. but the pilot Vias rES-
cued.· The group reached the DPa few minutes before the B-298. The 3squadrons fla'\7 escort 16,000,17,000 and 19,000 feet, with the bombers
at altitudes from 17,000 to 19.000 feet. The lead bombers Vlere escortedto the PI' and 10 miles beyond. Then tl:le fighters returned to the DPand
escorted tbe second ",ave of B-298. Aft er the ini tisl run. 8orneof theB-29s returned Wto E on a second run. Escort was given until the last
bomber had gone over the target. No enemyaircraft were seen or en-countered. Heavy flak W8 s meager insccura.t.e. Return t a base was-witho·Jot
incident.The 506th Fighter Group arrived at the point for rendezvous
with the bomber strike force at 1125 and ·orbitted T Im of 0 Shima far 15
minutes. The bomber-sdid not appear end the P-5ls continued on their
alternate mission. One squadron maintained high cover and sighted no
enemy aircraft. The other two squadrons investigated Sagami and i~t5ugi
airfields but found no wortn;,:;hile targets there; end so they eorrtLnued
south and southwest strafing a variety of targets of' opportunity i b:ud 4
ing pcmer lines, transformers, railroad facilities and rolling st:)~k,
Small shipping was strafed at lands end and one squadron split up Vihh
O1'1eection strafing the redio statJ.on and ligm.thouse at Chi·-ha-saki on
OShima 1 and the other section strafing Nojima-saki and nearby wa'tan,
damaging a lighthouse, radar stations and oil storage tanks and fll'i~g
a larg~ freighter. All planes of this group returned to base safeiy~
15th Fighter Group: Meager inaccurate heavy flak "as ("u·
countered between Mikawa Bay and Toyokawa&
506th Fighter GrClupi Meager inaccurate heavy flak "as <':1
countered at Chogo, Hiratsuka and between ~tsugi end Yokohama. Inten~~
inaccurate light and medium flak was received at Odawara. Meager iI.·
accurate light flak was observed at Shiraha~ and Nojima-sskio
8. COmmunications:
Loud and clear except for Jap jamming on Channel " C " (Y-3Sj,
9. Weather I
1'1110o llinpire - 4/10 to 5/10 cumulus based at 1800' with
tops at 60001 end few tops to 10,000'. Visibility 20 miles below
15.000' and unrestricted above.
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515t h Fighter Group Targe t A re a - )/10 cloud cover, bases
,000' tops 6000'. V isibility unlimited.
506th Fighter Group Target Area - 3/10 cumu lus b ase d at3,000: with tops at 6,000' a l ong coast . b ecomi ng 6/10 to 8/ 10 coverage~t th~s level about 50 miles inland. Vi sibi lit y 10 to 12 miles in hazeelow 1 0,0 00 a .l1dunrestricted above.
10. a • A mmunition Ex p ended:
UNITS
15th Fighter Group
506t h Fighter GroupTOTAL
5" HVI..~OUNDSCllIBm .50
800
~27.1]0
aQ__
a
b~ Gasoline rellll9ining in planes ccmplettng mi6sion (gellons):
UNITS AVERAGE PER A L e A L e WITH MU Ale OJ ITH InR E S
15th Fighter Group
45th Ftr Sq 100 150 6547th Ftr Sq 98 134 5378th Ftr Sq 90 119 49
506th Fighter Group457th Ftr Sq 86 111 39458th Ftr Sq 71 90 50462d Ftr Sq 8 4 119 59
11. Observations:
a. Airfields:
Atsugi - Approximately 50 dummyand inoperational air-
craft including 2 4 /E planes were Sighted on the field from 60001.e
Sagami - Twoto 3 dummy aircraft were s ighbed, Ten planes
Were dispersed S of the field toward the coast.
b. Ground Installations:
Tihat appeared to be an over-size weather balloon with e
radar reflector Qevice suspended on8
long cable beToo, was sighted at15,000' N fi of 0 Shima. The balloon was white or silver with a red me?t
ball painted thereon~
c. Shippin8i:
Ten large vessels were Sighted in Yokosuka Harbor and 20
luggers were in 1o. tami HBrbor.
12• Remarks:
This was the loth VIR escort mission completed by t:l~_Commandand one of the most uneventful to date. Bombers were cl.)~d7
escorted over the target area :from the beginn'ing to the end of tl'S:l..:
attacks. Not a single enemy plane was sighted despite the tact that
weather conditions were favorable to interception, with visibility
unlimited. No friendly fighters were lost or damaged to enemyactionon the mission.
/s/ E . M OORE
/tJ E. MOORE
Brigadier General. ~.
Commanding
l? -
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ANNIX
B
V,EATHliR
Part I - iJeather Summary
Part II_hart - Forecast va -Observed ~j;ee.ther
Part III _ Prognostic Ma p
Part IV - Synopt 1-eMap
"l A'4gust 194.5
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PART I _ 'lI.EATH:ER SUMMARY
1. PLANNINGFOfUDAST
3-4/10 low cloud base 1800 rt, tops 8-12,000 ft. with scatteredmiddle amd high cloud and seet ter-ed shO;le,rs increasing in inten-
sity late in the afternoon.To 21oN: Same as bases.
To 230N: 5-6/10 lo w cloud base 1500 ft tops 8-l5.000.ft, brokan
thin layers of ;middle and high cloud and frequent shcm-ers.
T To coast: 3-5/10 1~ cloud base 2000 ft. tops 5000 ft.ar2ets: As indicated on previous briefing.
2. OPERATIaNAL FORECAST
Bases at Take-Off
Scattered low and broken middle and high clouds.
There wil l be scattered 101 '1 and broken middle and high clouds
to 20~. From 200N to 22QN there will be scattered low clouds
with a few cumulonimbus, overcast middle and broken high clouds.
From 220N to 310N there ~ill be scattered low. middle end high
clouds. From 3 10N t a the target there will be broken 100 and
scattered high clouds.
Targets
4 /10 stratocUInulus. base 2000 ft, top 6000 ft, 2/10 cirrus at
28,000 it; visibility will be 6-12 miles in haze. Winds at
17,000 ft will be 2600 at 20 knots.
Ease on Return
Scattered low I and broken middle and high clouds with light
sh~erB •.
Bases at Take-Off
Scattered low eLouds "'lith occasional scattered higb cLouds ,
There were scattered 100 and high clouds at 2 1 O N 0 From 210N
to 240N there were scattered 101'1 clouds and overcast middle
clouds with thunderstorms. From 240 to target there were
scattered Im1 clouds and occasional patches of middle clouds~
TargetToyoka'rla: 3-4/10 stratocumu1us t tops .5000 ft.. 'liinds at 17,0f)('
ft wer-e 1200 at 16 knots.
Eases on Return
Broken low and high e10~ds and scattered middle clouds with
shcmers.
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"\'. \
: : : ~ --'" '~t!, . . .o -UI -
- -. a . . --
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-,-
~r~!,/
• C HIC HI J I
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C
CQMMUNICA.TION3
Paxt I - R eM
Part II - Radio
/
MissilDn No. 317
7 . AUgust 1945
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PART r . . . - . _ R Q A ' I
1• Pul"pos e:
a. To D fF enemyred.are.
b. To Cenduet a genera 1 aeElrcb in the 20 to 3000 me. reg~ om•
me e • Tobaorrage jam thee nemygun-1ay ing radars int he 72 to BIl,
and 190 to 210 me. regi ors and to spot jam any gun-lay ins signa 1e
appearing outside the barrage.
2. M_ethod:
a ~ Ten ReM observers part iei pated and USEidthe foli.Ol1ing equip-
ment t0 accomplish the search and jamming: 118 - AF-T-l..69 - 1,FQ,-.2.
" _ ARQ-B. 12 _ APT-3. 10 _ AFR-4. 1 _ i.JlR-7. B - AP1,-1l. 2 - 1J'1.-6 aId
2 -.A.PA-24.
b. Each airplane was equipped vli.th 1 or more electroni.c
jammers so tuned that each flight squadron produced it C M n barrage. Tn.e
barrage ...as aupp.l ement ed by the us e of spot j.ammer s •
3•. Results:
a • Thirty-f our int ere spts ""e1'e r acord ad and are 1i.st ad at th e
end of this section.
b. The barrage was reported. as continuous and strong" The
shifting of freq.uency by the enemy rad,8r operator,s to avoid spot jamming
l'16,S I'epOl:'ted.
4.. Remarks;
a. The following unusual s-igna 15 were int ercepted: 47/112/38,
293/344/34. l40/1490/~ I 41S/200/il-5. 322/100/13.325/200/15. 300/500/70.
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'e ~~
(;.
~C
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2 . :;~~11L!-1
00047
u:t:....~:~E~~:t~_OU2 38 3107N .1.2100060 08.50 13759":: 080745 09.51 21 S ·~r~r
0006700 33#:51 13BIlr'S 08071~5 1145 2l 12 1 is
OOC700967 20 3348); 13314~ 0807!~5 114C 21 12 1 S
'~ . . ' IJ~!J:
00071oM 5 4 4 3220U 13715'S' 080745 1018 21 121 .'l <:"" D1l1
0490 25J'
00074 j '°47J1i 138063 080745 091~1~ 21 12 1 S s · · , r ~~II
ooon,048$ 25 5 0 S O N ' 13805B 080745 0946 21 121 S
~~~r ~:;l
000811863 07 3 . 3 1 , ) 0 1 ' 1 13635-:: 080745 101,2 21 121 S GL o T J o p 3
0009104-72 4 0 3040!·) 13810S 08071~5 0941 21 12.1 S ~ ' : ' " f'j!II
00092
0000 12 30271·' 138150.; 080745 0938 21 12 1 s - r : : : " ' ~ P
00082 0370 3 6 3300N 13800'1: 080745 1<:01 2:1 12 1 '" ~~.~0010102021D445 /.;.03050rJ 13810:;: 080745 1003 Zl 12 1 S
~-~~Jr!r00097' 0700 09 3130N 136M!') 080745 1208 21 12 1 S '3".~ 00101000200100 048£ 16 3[ '20' ; . : 13920n-: 080745 oBS5 21 12 1 ~ " " ' : : " 1 - - - 00101020200100 050'Q 24 25 3 O J ! 1lj.13DB 080745 071~.5 21 12 1 !O : ? J r . 00101020200102 0000 24 - 3130N 13840.:: 0907lr.5 1234 21 12 1 f! ~.' 00,10102020 0 1 0 2 045.5 18 3105].' 13755""£ a80nS 1010 21 12 1 8 - - r ' ~ 001010202
0010:3 03.36 40 33..55~: 13540,:> O e 0 7 4 5 1601 21 122 P 1~'~01010202
00105 0480 20 2600N 141153 08071.. 0 7 5 5 21 12 1 8~r. 001010202
00106 ( " 1 1 . 5 0 26 323Dp- 13520!j; 0 1 ; ! 0 7 h 5 1139 21 12 1 S~ .. 001010202
00106 0500 22 265cm U:I05s 08071>5 OD07 21 12 1 S'"'::"I'"~. 0010l.O202,
00106 0180 3 7 3').2:Z 1]835.:;::80745 0918 21 12 1 8' P" :! I •• " 001010;:.02"
00107 0')00 14 2630}) 1~·Q5O=::00074.5 1400 21 12 1 St=!"L.' 001010002~.
00107 0335 !~8 2')501'~13853;'] 08071~5 1028 21 12 1 E ' !1.~ 001010202
00140 1490 09 294-01'~1l:.020S 080745 1315 21 12 2 P0011~7 0495 3 0 3 4 - 3 0 ) i ! ' 136_SSs- OS07!f5 1115 21 12.1 ;S 001030003
00149 0482 08 -'955rr 13835~ OS07hS 0')27 21 12 1 S3~~r
00103000300150 0450 16 33501; 13605:: 08074-5 llOO 21 12 1 S
~~. 001030003
00207 0984 30 3440H 138'04: 080745 112.5 21 12 1 ,$ . ~ . .= r 001020002
00293 0 . 3 4 4 34 3437IJ ; L3 65 0 3 0807~-5 1106 21 12 1 S
00210 !~S50 06 2635H H~10S1 t 080')'43 0 8 0 1 : _ 21 12 1 S
00300 0.500 70 3 310H 1360~ 080745 1050 ai 12 1 S
00J2'2 0100 15 31401>1 1.J73 OS 080745 1025 21 121 a00325 0200 1 . 5 321 O i ' J 1370Clj; 030745 1040 21 n sr00415 0200 1 5 305 S N 131H01 0 8 0 7 4 5 1013 21 121 S
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; PART IL:~
1. Strike Reports: Twelve Strike Reports were received during thell1ission. T'"-
'.JCee each from the 58th, 7Jrd, JIJth and 3l.4th'l1ings.
a 2. FQXiTransmissions.: Eighty-six percent of all aircraft radio
Rperators received "Dummy" OF" type messages fran the ground stations.
t easona far not receiving these messages included being off watch due
a other duties, faulty equdpment and working with navigator. There
"ere only 3 operators without logical reasons for Dot receiving the
messages.
'3. E'l:eguencies: !i.tmospheric interference .16S slight throughoutthe ent~~ . ' th: . .R· .......ma s adon on all of the strike frequencies dur~ng is mlSSJ.ODo
elatively few instances of intentionel jamming or interference were
reported. FollOWing is a percentage breakdown of trai'fic per frequency:
3.75 p e r cent on 3 megacycles; 39.75 per cent on 6 megacycles and 56050per cent on 11 megacycles •
. 4. N9vigational Aids: The 58th -'iing reported using Air-To-Air
h0m~ng SUccessfully during this mission vri.t h 22 aircraft. No HF/DF
bearings or VHF/DF bearings v er e requested during this mission. Radio
ranges, broadcast stations and herners were used effectively.
5. Net Discipline and Security: Very satisfactory net discipline
'l7as reported. No violations of security were recorded on the strike
frequencies.
6. EnemyTransmissions: The following incidents of jamming, enemy
interferem e and transmissi ons ;;rere recorded during this: mission:
a. 3020 kcs: Voice at 1928Z was very effective.
b. 6615 kcs: Unidentified 0;3 at 19002. was partially effective.
e. 10305 kes: Unidentified O;i at different intervals was
ineffective.
d. ]16Q kcs: Negligible.
e. 6055 kcs: Band saw tone at 0030Z was effective.
f. ~0880 kcs: Veice betweeD 0300Zand 0447Zwas very €ffeetive~
g. 3410 kes and 7310 kcs: Negligible.
h. 10125 Res: St eady hum and Series of V's at 2000Z and 214.5Z
were very effeative.
i. 1990 kcs: Negligible.
j. 7li15 kcs: V's, steady tone and keyed 0;; at 2330Z, 0030Z ~ere
very effective.
k , 10820 kcs;
(1) ~i hash et 0030Z, 1904Z end ~0218Zwas very etfectivl) ..
(2) ~ hash at 0250Z and 0313Z was very effective.
7_ Distress: There was no distress traffic carried on by the
Wing Ground Stations during this mission.
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D
INTELLIGENCE
Part I • Enemy ldr Opposition
. Part I I - Enem;rlUltiair ere ft
Part III - Strike h.ttaek Report
Mission No. 'U7
7 iH , l ,guat 1945
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,T"
PART 1" - ENEMYAIR OPPCSIT10N
:rOYO~· J,ir OPposition was nil on tl,'lia daylight e-ffort against
. .' wa Neval Arsenal on 7 August. Only2 enamy aircraft wereSlghtE)d , nd ' .( " ',sno attacks WSr'S sustained. The 2 enemyo;Iuereft aeenun:tdsIil.tified but 'b ',' " , ) "the
op' .-' , I" ut elisved to be twin-engine flare gOl.ng an "POS!Lte direetionl,hen encountereCi neflr land'e end",
t" 2~ ,Someof tbe B-29s wer-e escorted by 1 Groupof P-51,e. frcm
heIPt010"'l '" '1'.51' t,'ll'co ,'!llJ.. as past bombs eway;. One 17l.ne;reported - ,1 3 p.s ro l.llgf ursa from IP to target. The P-.5l1 S 17hich strafed gro'Undtargete
a,~d no enellJye~craft on the ground on assigned airfiGlds, so they2 bac,ke~ gr ound l.nstel1a t ions. On 11augi air £ield. the P-51 '13 saw
mi 4-en&lOe and 48 s ingle-engine and twin-engine d1JJNnies. Over, the
siddle of' Tokyo Bey. they also saw a free balloon 20 feet, indIamet er
. 15. QOOfeet. gra y with red balls and e. box 6 to 10 feet squereSUspended beloo.
1. S\JJJlniary of Attack:
'Fbe primary target l1'as bombed by aireraft of the 4 . Win§38s
follows:
Nmnbe. r of .AircraftTime Over Target
altitude Bracket
Llxis of Attack
Undercast
3 0 29 3 2 3 30123Z-0l32Z0126Z-0131Z 0126Z-0139Z 0113Z-0124Z16.000 16.1JO-23 ,600 17.700-19.70017 .900.
19~40067°-780
Cl iVU
z a
68°_80°OAVU-2/10
66°_71°.2/10
:2 • Flak En Rout e to Target:
.m
65°-74°ChW-4/10
below:
En route to the target flak was eneountereda.e tabulated
Loc.ati0n
Uji Yamada
AkenogaharB
Kushimoto
Teu
Mat.suaaka
Coordinat es
3 4 5 1 N - 137 26 E
34 30 N - 1 3 6 4 5 E
34 3 2 N . . 1 3 6 40 E '
3 3 3 0 N - 1 3 5 5 0 E
34 43 N . . 13 6 3 0 E
34 3 5 J iI - 1 3 6 3 1 E
34 20 N . . 1 3 6 3 5 E
Remarks
Meager and inaccurate,
heavy and medium
Mea.ger ahd Lna.ccure te,heavy and medium
Meager and inaccurate,
heavy and mediwn
Meager and inaccurate,
heavy and med.ium
Meager a nd inaccurate I
heavy and medium
Meager and inaccurate,heavy and medium
Meager and inaccurate,
heavy
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3. .1:.1akOv- the m_ =< .ar·get:
Time Of'
_Release Number of' Aircraft
ill F.ormation
Jd;rcrai't
DB .magea_
011312 5
0120
0123-0124
0126_0127
12 .3
9-10 o
5-1-0
0128-01.3011-9-11-11 6-0-0-0
0134 9 o
Remarks
Meager and
acourate,heevyMeager and
accurate ,. heavyMeager and in-
accurate, heavy
Mea.gar--a ccur at e
to inaccuret'e,
heavy.,
Very accurat,efor 1st Sqdn .•
lnaccurate or
nil tor etherS,
Meeger and
accurate
a. An analysis of the i1bove fig);ll'es clearly indic,atedthat
the target defenses could edequately handle only 1 bombing formation
at a timej i.e., one Squadron was sufficient to saturate them to the
extent that trailing Squadrons within a 2-minute intervel fGund flaka1ther nil or inaccurate.
b. In all cases flak 'Wasdescribed as meager. and controlwas ei the.r cont inuously pointed or pred icted coneentr:at ions. Most
of the damage wasinflict.ed by 2 predicted concentrations of 10-.12
bursts eaea h~tting two ll-aircrart format· ions.
c. This relatively meager def'enae app!lrently accomplished
some of the most effective firing the Japs have demonstrated to date.
4. Flak on WithdFawa1: On r;rithdrawal me.:agerand inaccurate,
heavy :flak was observed at Rarramatsu and Shimada.
5. StmmBryof Loss and Dam:tge:One aircraft was lost to flak onthis missi0n (severely damaged over the target and crashed at Iwo Jima).
Of 124 aircraft bombing, 21, or 17.0%. sustained flak damage•
• 32 -
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QQ~;[1!!.E~1:1.!.1
Pi.8T III _ STRIKE ATTACK REFOR'!""
9.0.21-16.53TOYOK/ i. .. .. N I: .. V 1 .L i >R S EN Io L
20 A' 14 hU' For ce Miss ion 317. 7 August 19&5 _ 58th• 73rd, 313t h a n.d 3 c t
Bomb Wings
CClvlBINED ST1<TISTIGS ON BOMBING kCGURl.CY
Percent oftotal dropped
B:m~ droppedV:tSl ble bW:sts
CalcUlated and preboble bursts
I.!i:J.pects 0-1000' of" AI'
R 1-2000' of AP
n 2-3000' of Apn beyond 3000I 0'1' AI'
3256
510
2 2 7 4
1290902
282
527
40278
16
Classificat Lon ef bombi:q.gaccuracy.: Goed
S'lRnar ATTACK REPORT 58th BON.B YilNG
Time .o f Attack: 070123Z t. o 070132Z
Headi,.ng Over Target; 670' True
BombLoade 960 x 500 lb. GF
Fusing: 001 nose , non-delay tail
NO' . Ale DverTarget: 30 BombaDropped On Target: 880
BombingAectu'acy: .Fair
First formation over target dropped bombs in pattern around lVJPI. These
bursts ..ere obserVed inS',i ql!l8rter of ar-ea N 1 t " and NEquarter of area ~BD
(Ref ... c ro Industrial Report 48). Immediately after this formation
struck, the entire target area was obscured by smoke ,making necessarv
the plotti.ng of seecnd and third format i ons by ca.lculat ion~
The ma.jority of bomb bursts of second :formation of 11 . i V e were calcu-
lated tooe "l7ithin 1.,000' of MPI. The bombs of the third fornetion of
9 A/C were calculated. to be more than 3,OQO' sh0rt of rv~I.
Table of bombing statistics:
Total numbe'r of bombs dropped over target 880Total number of visible btU'.sts plotted 173Total number of calculated mnd probable bursts plotted 707
Total number of bursts within 0-1000' 278 - 31.6% o f bursts
" "If
" " 1-2000' 331 - 37.6% ft "II n
" " . . 2-;lOOO I None
"n n ft beyond 3000' 271 - 30.8%
Following formations were plotted:
462 Bomb Group ~ 657 A /e - 293 bombs
40 Bomb Group - 548 A ./ e . . 316 bombs4 4 4 Bomb Group - 982iAjC -271 bombs
• Based on 20thAF Strike Attack Report No. 1'5.
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Ai J: - , ._, "'-'rne bcmb~'
~~ not ;plotted;
4 . Ale . ·t~~2 bo . J e ttsQned 78 bombs
~mbs not accounted for
PhotoSl'eceived, .All prints from banbs away to
series: 3 01 - ]18.
S'l'RIJ{g A.,..."
- ....~-l.'AG1{ REPORT ?3rd BOMB>;,ING
bomb bursts of follOlling
07 0126z - 0701.3 lZ B0111b Load.' .574:x Nb4:30.5 x M 64 (QOOlP B )
Fus ing : M64 - .01 DOSe,. 0011-
~ delay tail.
No. of Hits 00 Target: Unkn~n
Heading O Ve r T ar ge t,
No, hie aver T,arget,
660 to 710 True
2 9
BQDlbi.ngccuracy: Unknown
1 lM < R R A TlV E R E PO R T:
., S.trike photos from 7.11./0 indicate good to excellent results withmaJOr~tyofbombs hittingwi thin target area, Numeroushits observed
~n ot:f ic es , rnachine shops ~and st Ol'age bui Id :lings in SE sect i on of target.
S orne a dditi one1 hits vis ible in barrs clcs and housing 61' ell. at SE, edge of
target. Bombpatt erns could be plotted! for only 2 squadrons sineethe
second squadron over the target did not obta.in any photos shewing bombsaway or bomb impact.s. It isbeli eved hcwever the maj6ri ty of bcmbs frOlJl
~his squadron fell within fhe target area. HUge columns of smoke obscur «
lng all except eastern most portio.n of target prevented a more completeassessment of damage.
Table of bombing statisj;ics:
Bombs dropped on primary ta.rg·et: 544:1t MG 4257 x M 6 4 (Camp . , B)
Visi ble burst a plotted: 73Calculated proba ble bursts plotted: 480Hits within 1000 r of 1,P: 150 - 18.8%
Hits within 2000' of AP: 233.29.2.5%
Hits within 3000' of 1 > P : 167- 20.8%
Hits - exa'ct location unknown: 278 ... 30.9%
FollOWing fQr'matio!!ls were plotted:
1st SquadroB 10 .A/C 287 x M b k
2nd Squadron 9 A /e 249 x M64
3rd SQ.uadron 10 11/0 265 x M64Bombs Jett is ened 1 30 x M i S l I -
48 x M64 (Comp. B)
Phot cs received: 5M317 lV2, 3. 4, 5; 2Vl, 2; 3V4...9i SV2-11i bV2-7i 7V1-I5
STR IKE J,TTaG K R EPO RT 313th B OM B ·!! ING .:
Time of attack: 070126z - 010139Z
Heading Over Target: 67i'o - 75° True
BombLoad & FlI:sing=903 x 500 lb.
GP. FUsed Inst nose, NIl tail.No. of A/e Over Tar get: 33
No. Bursts on the Target: 815 Bombing AccUTsey: li'xcell ent
Total Number bombs dropped over target: 843Total number of visible bUrsts plotted: 28* (Carried as ~jettisonedn
belOi'l )
Total number of caleuJ.ated probable bursts plotted: 843
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"
S/I< ".n°Port 13"".~ Cont 'd.
Total N ' 0 : : %Tt '.• ' .e, bursts within 1000' of NiP1 - 612 - 7.-1.
'1 '0 a.l No., bllXBt.S wi thin 1-"'000.' of' MP1- 20.3 - 25%otal N' .. -. "'';;Total o, bl:U'sts l'1ithin2-300D' of 1 1' 11 '1 ' -. N 'o n e
No. bursts l'J:lore than 3000'from MPI - None
Til e ,fOllCl'll. nl!; :formations were plotted'
lat Formation- 11 Ale dropped 278 % 500 lb. ap'a.2nd. l1'ormetio·n; llJ./C dropped 273 x .500 lb. GP's.3rd Formatior:flll~/g dropped 292 x .500 lb. GP'a.
The be' ~n 1"" t d for ebove.,.. """ ce 0 bemba aLrbcr ne but not accoun e ..
"'60 Jo t 500 lb. 01' Jettisoned before bemb run (28 visible in photos
and plotted)
25 x .500 lb. 0,P dropped on Pri1ll!'lry Target with 7.3rd I'ling formation--no camera.
Nl i. RR 1 . .T IVE REPORT :
The targetl'1.9.,s completely obscured by smoke and no bursts ucrerecorded all strike photography. 1,11 bursts reported above uere
calculated from fair to poor strike photography. Aoolysis of thesUccess of the mission based uponoalculatcd bursts teflect.s that
the MPIvas well covered and that on effective pattern. of bombswas placed on the assigned target area. The smoke bi11cms over
the target appeertoverifythe 'calculat ed impac.t area.
One afthe aircraft released. prematurely and bombs .struck apprCIX-im a t ely 16,000 I short of the target. Thea sham bs CB 'I!lsedpossible
to a railroad and train--these bombs fell within a small built-uparea.
There is one cluster of bursts about 14,000'short of MPIwhich T Ie
are uI)abl e to aceount for with informat ion ava ila ble at this tiree.
STRIKE i .TTl:.CK REPORT3l4th BOlVJBING
Time of Attack: 070113Z - 0701242 BombLoad: 732 x 500f iN W b 4
Heading Over Targ'st: 67°, 68°, 76° True
No. J..C Over Target: 33
Fused: .1 Nose,NDtail
Nq. Bursts on Target; 450
BGIDbingi.ccuraey: FJ:cell ent
W lR R liTIV E R E PO R T:
Good quality strike phat ogt"aphy shoos excellent results tlith
several hits on the j,\/p building and addit ionsl hits end near-
misses concentrated on the bl!.lildings wit hin approximately l,OOOI
of the A/P.
Smoke and dust quickly obscured the taT get ®!1'81.'l1 prevent ing furtheraccurst e asaeeemens,
Bombing atatistica =
Bomba dropped. - 7.32
Visible bursts - 264
- 35 •
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MISSIONA-2 S o B . •
7 AUGUST 1945
T 1uKAM A NAVA L ARSE NA L .90.21-1653
CONF IDENT IAL
- --
• V IS IB LE B URSTSo PR OB A B LE E lJR STS
.t==C A LC U LA TE D B U RS TS.. -
STRIKE ATTACK RPT 135GJ.U.-20AF
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SllOll):If------
Boab Weights: 1 4 - 6 4 ( m ) - 5 3 5 1bs.
M-64 (Comp») - 550 1bs.
s.47-A2 (lfP) - 125lbs.
MISSIOJl"
DAn 7 Al:lgl:l:Bt 19l~5
~ &. FU EL O ONS T.MP TI ONIGHT
M IS S I ON H U M BE R " " " 1 7 *317 #317 " ' "317 *311-,
-,"rl~ t _ , . , ...,.on "''..1'1i1' t< ,., ,,- -n ~'l'~ \'[(1- 'rOTA!.m r I T
-AIBCBA1'T COllsIDEllED 2 8 2 8 }O 32 118
AVERAGE FLYING f I : J(E 1 4 : 1 0 13:39 1 3 : 3 1 1 4 : 1 3 13:54-
F UE L CO NS rna D:
5 9 2 6verage 5 6 7 9 5 8 0 6 6 0 1 0 6167
MaxuUJlj 6 0 2 5 6 2 1 1 6 2 5 5 6 6 0 4 6 6 0 4
M1nimUIII 5 4 0 0 5 4 1 0 576B 5 5 3 4 5 400
1 1 ~F U E L B . E M A I J I N G :
8 9 4verage 7 8 5 9 1 7 7 4 7 1 1 0 7
Max imum 1 0 5 0 laB 1050 1 6 5 6 1 5 5 6
Minimum 4 7 5 5 S 9 4 3 5 700 4 3 5t
AVG . GALS . U SED PER HOU R 4 0 1 . 1 4 3 5 .0 4 4 4 . 5 4 3 3 . 4 2 8 . 9
fO TAL U SED ON AIRBORNE A/ C171'\471 19~qlO 211~l:t-) 21TH7 7 8 8 2 0 1
W EIG HT D ATA~. .NO . .A .IR CR AH A lR BO BB E
12 " 3 1 3 5 33 1 3 1
AV G. R AS IC 'iT. O "H A llI.CR AF 'l'7 4 8 1 9 7 5 1 9 4 74980 7 5 6 1 6 1 5 1 5 2
AV ER AGE U SEFU L LO AD6 1 4 0 0 6 2 2 1 5 0 6 1 4 0 5 6 2 3 9 0 6 1 8 5 9
AVG. NO . OF BOM B S LOADED30 - M 6, 28.4 - 2 6 , 5 - 2 2 . 1 8 - 2 6 . 7 1 -
1 > 1 6 4 M - 6 4 M - 6 4 M-64
AVG . 'iT. O F BOM B S LOADED
1 6 5 2 1 1 5 3 5 9 1 4 4 - 38 1 1 8 6 6 14518
AV ER AG E FU EL ID J.D ED6 4 6 6 6 7 2 4 6 7 5 8 7 2 7 4 61509
AVG. WT. O F FU lL LOAD ED
3 8 7 9 6 40344 4 0 5 4 8 4 36 l . ! 4 4 0 8 54
AV DAGE M ISC . WE IGHT6 0 1 7 6 5 7 7 6 4 1 9 6 s S 0 6467
AVG . GROSS W'f . AT TAD OFF1 3 6 2 1 9 1 3 7 4 7 4 1 3 6 3 8 5 1 3 8006 1 3 70ll
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roOOIEI'H AIR .FORCE FIELD OflDm
917
7 August : , 1 . 9 4 . 5
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'P.O. /11')
( .',) Tilll'~ :Jontl',,l: !,<,,:.d s,t'u!ldl'on pass -,s oval' DePflr-';.-ur', P,'tn~. "1+
0711001(.
C. J13tl l Wing"
FORCEWX lUTR ! ' : DMPI
prirnl1.ry Visual: 076102
$ecCl'ldll.l ';I' -Jisunl: 068086
(1) Reassc'lIfbl.y Area: J325N _- 136001'~.
(2) Bombfu.si,ng': 1/100 noaa Imd non-d:>l"l;' tnil.
(J) J\ I , tH ude s ,
3 S(1ua,ll'onsJ Sgu·:drons
(c.) Enr oube to t01.1·eot: 6,000 - f "BOO fCl~t and 8,000 - 8,800
f!~e~..
Priwlll"y Vif-:ull.l'. 17,GOO r" b I••S(~t"ondary Visual and Pr1lTh".rv Rvlm:: 21,000 f~.>t..
( t . \ . ) Tim;:, Cchr,rol: L,;nd squadr-on !'Jc.i"lS'~S OVi1C del'tl},vuro ; i:.oin;. ~t
07111t;K.
! - IPI YO RC E R EQ U IH ED
Primary Visual:
S',condary Visunl:
0900%
068086J Squadr-ons
:3 g",uanrons
(1) Rells ,3$mbly Are a: 31 - :- 0 51 ' 1· - 1 3 620E .
(2) J:loml<lusing: 1/10 nose and non-dGla;,r tail.
(3) :ll bi tudes:
(a) Lnrcute to t',rget: 6,000 - 6,800 _f0e~ and 8~OOO - 8)800
feet.
(b) At,sr,ck: P:r-iO"llar·\r Vi.sml: 1'1',000 fe.,'t.
S,~COndtlry Vi sulitl and Prinm.r'y H9..dt!.T': 21 ,000 tJ ' ' : > C.
f. Omit ':,ed.
~;. OmHtad.
x, (1) Method of ii."I;.t.&ck: By squadr-ons in column wtt:l mmdmum tii1\,~
in't.er;rnl bt~~wr~,, 'nsq'l!t:ldl:'ons.
(2) Route:
';.,." (1:":3)j r~·wi \." .
:3.11-52n- l ]S4530E3 5 0 l N - 1 3 9 0 6 £ (IP)
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31~Y ;:JON - IJ6J830t (D.P.)3,tl~30N- 13t'~:,aJot: (IP)
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i. J 1 an f){~ ~:d.l:)s 7.0 >! . ,~ ~.9 inJ. ~~d HZlf ~"'i1. . :·V·~~U!n 'J~1~- r l " ! " , ~·11
other tim'3s, cxc~pt foT' prcflit:;h i~ and post?ligh t f'reqll;z,",o~'
checks , wbioi1 are to bE' mac.,,)otJ tho ,C:T'otUld whil"" I;.he j annne-;"s
are installed in tl'H~ !.:lirpla.'1·;'s.
b. CO:1.mandPos!:.; Eq., Twontillt;l1 A:Lr p'oX'ce, GUl\jn.
BY CO ! ,1 i\ lANDOF L IEUTE i' IJ I. ,. 'I J' J' GE l \1 ~R b \L T i' H ll 1 ING :
P . K rA~ " LOR0010113 1, A ir Cor psChief of Stafr
O F F I C I A L :
D I S T R I B l J ' f I Q N :
2 CG, 58 ~,h Bomb W:\'ng
2 - fJG, '731'0 /Jomb Wil1:g
,2 - CO , 313th B omb Wi ng2 - C C : _ 3 J . 4 t hBomb W i n g2 - CG, 315th Bcmb Wing
lO G, V II F igh to o :J:" C omd1 CO, Jrd Photo Rocon Sq
6 - A-C ~actics, ~~~ntietc A ir force2 - 33rd SOY, Twent,ieth Air ]l'Ol'ce
1 - ReM Office, Twentieth Air l"orce1 OAS,Twentieth Air F,)rC8
2 CIU, TP.entie th l\iT Force
1-A-2 Reporting, Twent , iEl t r l Air Fdrc<:
4 - A-2, ~'wonti€lth Air For-ce
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G
DISTEilffi)TIo.N LlST
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CoPY No.
1
2
:34--5
678
910
11121 314 -151 6171819202122
23 - 24-
2 52 6 - 2 7262 9 ._ 53
34
35
3 6
3 7
38,-67
68 - 69
70
7 1727J747 57 6777879 - 80
D I S T R I B 1 J ' I ' I O N
'l'ACTICALMISSION REPORT
Commandi,ng General; .ArIW' Jlir F'orcesCorronanding General; U~S. Army Strategie Air .Forcee (~ar)
Cormnanding General. UoS, .1.rlllYStrategic ':dr 1"0=,"0013 (%=)
Chief' of Staff. U.,S. Arpy Stratogic '.l.ir F'oroes ({}.l3l:L)
Commanding General; Twentieth .'I.ir F'orce
Commanding General; Ei8hth Air F'orce' (Okinawa.)Oornrnander in Chief'. U. oS . A r T i l Y force s. Faci fic
Chief of Naval Operations. OP_lb-V
Coromander in Chief.; Pacif:i.c Fleet (M" Hq)
Commander in Ol,1.iai,' Pacific Fleet (Hear Hq)
Commander' Air Force. Pacific F.lset
Cormnaaiel.'; Third Fleet
Commander; Fifth FleetCommander; First Carrier Task Force
Commal].der,A1arianasCOlll.'1landing General; V.S. Army Forces, 'Hidd1e Pacific
COlWJanding Gener al; .A1lied J\ir i'orce s. S;rP;,..
Commanding Gene;L'sl; Far East Air ForcesCO'llll'OOli ng General; Uo,so Strat egi o Air For cas in Europe
Corrmanding Genera.l', MeditGrranean Allied Air Forces
Commandi.og General~ Fifteenth Air ForceCommanding General; Seventh Air .Foroe
Corrmand il]g General; V II Bomber Cormn__and
Cormnarding General~ VII Fighter Oommand
Commanding General.; Eleventh Air Force
Commanding' General, 301st Fighter Wing
Command Hq, Allied Air lilorces, S"lPA'
ATTN: Senior In tell ige nee Offi cer, .R. A.l •.F •
Oommander in Chief t u~s~ .ArmyForces, Pacific
.n-TN: G-2 (For Section 22. HCM)
Officer in Charf,te, Joint Intelligence Center
Pacific Ocean AreasCommanding General •. \r,ny Air Forces
A~TN; A e / A S Intelligence
C@':manding Gtmerru.. itrTrry lir Forces.'lTTN: lO/ x s , rntell igence, Oo11e ction :;]iv: sienCOl l l l11E l l " ld ing General, U.S. j . \ : : r r r i f Strategic ...ir ForceS (frJ.2.::')
ATTN: Intelligence .Commanding General, U.S. ,Al' l l lY Strategic A;i,r Forces (G'l.laa::)
ATTN: Co:nmunicat ionsFOR: Counter Measures Air Analysis Cellt.;!l'
Commanding Officer, 'l'wentieth Air Force Lead C:,',:;7 Sc~.ool
Brigad ier General, H.B. Iianse 11, Jr.
Chief of Staff. ' I \ ; { e n t i e t . hAir Foree
Deputy O/S, Opus ~ 'lwentiath Air Force
.AOof Sf A-2, Twentieth :':i.:t' Fo:.C'oCher,:' (>.a1 \",;"'f are 'orfi(',~':, L':.e.r;:t~v~,h .\ir Fo::,ce
OrQl'.;l!lCe C?d'icer. T"':~ntit:l'~:1. J: ': "', ):':ce
Di!'er;;~or of Tao::tiC(;, A-3, r . cwe. / i_;;~i .t~ir Force
Bistorieal. O f f i c e r , T w e n t i e t h A : " r Force
--~
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8182
83, 8 i J .
8 5868788
89
909 1929394959 6979899
100
101102
103
104
10 5106107108
109
110
III112
113114-
1 1 5
1 16117 - 130
Commanding General; 58th Bombardment iHng
C:ornm~ning General; 73rd Bombardment ':TingCommanding General; 313th Bombardment ',"ling
Commanding General; ]14th Bombardment ,':ingCommanding General; 31.5th Bombardownt '."ling.
Commal'lding Officer; 3rd Photo Reconnaissance Sq
Commanding Officer; 41st Photo Reconnaissance SqCo~~nding Officer, 55th Reconnaiss~nce Sq, Long Ra~e
:l{eather
Commanding Officl3r. Twentieth Air Force Combat Staging
Center (Provisional)
Comraandd ng Officer; 33rd Statist1c:;!.1 Control OnitCommandingOffi eel'; 6th Bomb Gr6LlP' (VH)
Commanding Officer; 9th BombGroup (VB)
GOl'lll!landingO:fficer~ 16th Bomb Group (VB)
Command l ng Off icer ; 19th BombGroup (VH)
Oommand ing Officer; 29th Bomb Group ( V B )
CornmandinBOfficer; 39th BombGroup (VB)
CommandingOfficer~ 4,Oth Bomb Group (VB)
Commanding Officer; 330th B omb Group (VH)
Commanding Officer; 331st Bomb Group ('.111)
Commanding Officer~ 44.hth Bomb Group (VH)
Commanding Offic'3r; 462nd Bomb Group (VB)Ccnmandf.ng Gi'i'icer; 468th Bomb Group (VIi)
Commanding o'fficer; 497th Bomb Group (VB)
Commanding Officer; 498th Bomb GToup (VH)
Cororuanding Ot'ficer~ 4-99th Bomb Group (VH)
COlllmanding orficer~ ,SOoth Bomb Group (VH)
Commanding Cffieer; 501st Bomb Grol:l.ll (Vii)
Comma nd ing O ffi ce r; 502nd Bomb Group (VH)
Commanding Officer ~ 504-th Bomb Group (VB)
COll1iilanding Officer; 505th Bomb GraUL) (YH)
Commanding Offi coer ~ .509th Composite Group
Co~nanaing Officer; 15th Fighter Group (VIR)
Com ma nd in~ Off ic er ; 21st Fighter Group (VIR)
Commanding orficer~ 414th Fighter Group (VIR)
Commanding Officer. '506th Fighter Group (VLR)
Reporting Unit; A-2; Twent ieth .Air Force (File Copy)Reporting Wnit, 3 1 . . . . 2. 'I\'lentieth Air !&'orce