Iwo Jima Camouflage (1945)

8/9/2019 Iwo Jima Camouflage (1945)

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\u2666 NUNITED STATES PACIFIC FLEETAND PACIFIC OCEAN AREAS

'7*:.

r -nnt2 \ Instructors "Rp^wI

-i~-W.IB.WTW*!Name __.- J&*&* --T*"PROGRESSIVE CONSTRUCTIONAND CAMOUFLAGE OF DEFENSEINSTALLATIONS ON IWO JIMA3UPPL E MIT TO B UIET IN RO. 136 45

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CINCPAC-CINCPOABULLETIN NO. 137-4513 1945JUNE^+ *


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GNCPAC-CINCPOA BULLETIN 137-Jp| Jffc mMOForeword hSlttl 2 1 1985

PROGRESS IVE CONSTRUCT lON AND CAMOUFLAGE- "vi : ; ; ,u25a0. ... . ' , / o.f . . '\ u25a0\u0084DEFENSE. INSTALLATIONS

ONIWO JI MA

PRESENTED IN STEREOSCOPIC PAIRSPREPARED; .I N ;CQJsiaUNCTjON

:WITH- 0-2; SECT lON sth- MARINE DlV IS lON

The following photographs of stereo pairs, with descriptions of enemy installations pictured, have been prepared as a supplement to CINCPAC-CINCPOA Bulletin No.136-45 titled, "Defense Installations on IWO JIMA". The latter publication presentsground photographs and diagrams of the positions presented in this publication aswell as many others. It is intended that the two publications be studied in conjunction with each other.Since previous publications have dealt with most of the antiaircraft defenses,primary consideration has been given to casemated coast guns and covered in -efensefantry and artillery positions. Each installation is shown in the varying stages ofconstruction and camouflage which took place from 15 June 1944, date of first aerial'

photographs, to 19 February 1945, date of invasions/ ; : ?

Table of Contents(H ) .

150 mm Mortar Cave Position TA 216 E (SE) 4-52 Gun Battery (One 12 cm, One 14 cm) CD Guns TA 216 G (SE) ..... 6-72 Gun Battery 15 cm CD Guns TA 216 D 8-92 Gun Battery 15 cm CD Guns TA 219 A , . . 10-11\ u 25a02 Gun Battery 12 cm Naval Guns (Short) TA 183 X . 12-134 Gun Battery 12 cm CD Guns TA 183 14-154 Gun Battery 14 cm CD Guns at foot of Suribachi TA 132 K,L .... 16-173 Gun Battery 12 cm Howitzers TA 217 A . 18-19Triple Mount 25 mm AA TA 217 L 20-21Blockhouse TA 181 C (SW) 22-23Dummy Covered Artillery Emplacement TA 197 V (SE) 24-25Blockhouse TA IVB V (SE) . . 26-27Mortar Positions (150 mm and 81 mm) TA 198 X 28-29Command Post TA 198 C 30-31Mater Collection and Storage TA 218 V (NY) . 32-33

10 cm Dual Mount Shield Guns TA 217 G ........ 2-3

\u25a0Mortar Positions TA 13 1 J ............. 34-35Casemated 12 cm (Short) Naval Gun TA 132 R 34-35Camouflage TA 163 X . . . . . . . . . . . . . 34-35

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f ( -** '*f>\ u25a0$ f M.M- i&'M-.&:ffi~M "-si. :i.-^tePROGRESSIVE ;GONSTRI^gO^ D^SE INSTALLATIONS ON IWQ JjMA.10 cm DUAL MOUNT SHIELD GUNS(W)A 217 G

Orientation sketch fo r right member of stereogram #3.Road

\u25a1 BuildingGun positions marked by x, and lettered A, B and D.CP marked b y x, :and lettered Ci i

-Stereogram 7fl These l^i, June 1944 pictures show the nature of ;the terrain beforeconstruction began. The whitish, irregular area between C and Dis a typical water collector; the pipe leading to the storagebasin is visible running northerly. .

-Stereogram #2 These. llDecember 1944 pictures show work has begun on the revet, ments. along.B is the farthest-Stereogram These 12 January 1945 photos show something in B, and the spiders#3' of the gun mount in D. The square excavation for the CP is visibleu25a0 \u25a0 ' \u25a0 \u 2 5 a 0\u25a0\u25a0-\u25a0 \u25a0\u25a0\u25a0\u25a0\u25a0\u25a0 \u25a0 \u25a0\u 2 5 a0: . 'at 'c. . \u25a0. . . .-Stereogram #4 The guns are installed at B and D on these 4 February 1945 photos.The rectangular object in A is well below ground level in comparison with B and D. Note the rangefinder just southeast of C.

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PROGRESSIVE CONSTRUCTION DEFENSEND f^OTfl^sGEf|)F INSTALLATIONS ON IWO JIMA.?CINCPAC-CINCPOA BULLETIN 137-45. M G^JlffilmWff*t

10 cm DUAL MOUNT SHIELD GUNSTA 217 G (W)

STEREOGRAM No. 115 MAY 1944 ESSEX 52

SCALE 1/4800010 1 200'

N

STEREOGRAM No. 211 DEC. 1944 VDS-7B

SCALE 1/10,000010 1 200'

N

STEREOGRAM No. 312 JAN. 1945 VDS-218

SCALE 1/55000' 200 N

STEREOGRAM NO. 44 FEB. 1945 VDS-34CSCALE 1/4750

010 1 200 N

JICPOA 50531-204 3


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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMACINCPAr-nwrPOA BULLETIN 137-45.

150 mm MORTAR CAVE POSITIONTA 216 H (SE)

STEREOGRAM NO. 12 SEPT. 1944 CVL 30-20(P)

SCALE 1/5250'N 010 1

-*STEREOGRAM NO. %

12 JAN. 1945 VDS-218SCALE 1/65000 200

/STEREOGRAM No. 3

4 FEB. 1945 VDS-34ASCALE 1/46000 200*

N

,/ -*4


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PROGRESSIVE CONSTRUCTION AND f#Ji> JjJiE J|F C^Hlsf pff>fp.|l|pNS ONJWOJIMA.CffUP^CtiCipCPOA BULLETIN 137-45. UILif f\fj|\lI IfT11150 mm MORTAR CAVE POSITIONTA 216 H (SE)

Orientation sketch fo r right member of stereogram #3 .=- Road11 1 111 1 111 Cliff lineCave entrances Indicated by x, and lettered A, B, C and D.The entrances were all connected by a series of intricatepassageways that provided cover fo r the m ortars , ammunitionstorage, and living quarters.The mortars fined from the cave entrances.v

-Stereogram #1 These 2 September 1944 photos show beginnings of cave entrances.Note the natural vegetation and absence of large piles of spoil.-Stereogram #2 These 12 January 1945 pictures show an increase in digging activity.-Stereogram #3 These 4 February 1945 photos s,how large increase in spoil. Lackof camouflage would indicate digging was continuing. Amount ofspoil indicates extensive works.

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PROGRESSIVE ;CONSTRUCTipN OF DEFENSE INSTALLATIONS ON IWO JIMAND CAMOUFLAGE'i CINCPAC-Ifl ivnire,,. .--4

r

2 GUN BATTERY (ONE 12 cm, ONE 14 cm) CDTA 216 G (SE)

Orientation sketch fo r right member of stereogram #1.'""^ /X Road% Pathc a.v(/\.,/r I *^ ni1 1 im&' J "fe**, S/^/ M'limCliffiiiilineine?^ y >"V..

\u25a 0 ' u 'uhi\nC i/o Gun positions Indicated by x, and lettered A and B., on capture.tf VJ/ n />'"% f C and D were empty

-Stereogram #1 These 2 September 1944 photos show minor activity in area, at Ain particular.-Stereogram 2 These 11 December 1944 photos show much work has been done sincestereogram 1. A has been casemated and camouflaged. B, C, andD appear to be empty.-Stereogram 43 Shadow definition on these 12 January 1945 photos make A stand outprominently. B and C have nets stretched over them.-Stereogram #4 These photos of 4 February 1945 show the gun inB. The tufts ofgrass comprising A's camouflage are readily seen. C has a netstretched over it. D is still empty. Ground reconnaissance re-vealed A to be 140 mm and B to be 120 mm.

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ONIW^IMA.>. * MS;,J *

12 cm and 14 cm CD GUNSTA 216 G (SE)

STEREOGRAM NO. 12 SEPT. 1944CVL3O-20(P)SCALE 1/5250' / 200 N


SCALE 1/10,0000 200' N


SCALE 1/5500 n^^^200'0'

STEREOGRAM No. 44 FEB. 1945 VDS-34A

SCALE 1/46000> 200' N

iJICPOA 50531-206 7


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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSECINCPAC-CINCPOA BULLETIN 137-45.

15 cm CD GUNSTA 216 D

N

/N

N

N

/N

INSTALLATIONS ON IWO JIMAQQUHEENTIAT

STEREOGRAM No. 14 JUNE 1944 CVI33

SCALE 1/71000' 200'

STEREOGRAM NO. 22 SEPT. 1944CVL3O-20(P)SCALE 1/5550

0 200


BCALE 1/10,000010 1 200'

STEREOGRAM NO. 412 JAN. 1945 VDS-218

SCALE 1/55000 200'


SCALE 1/46000' 200

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PROGRESSIVE CONSTRUCTION AND^CAMQUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.CINCPAC-GNCfOA BULLETIN 137-45jf jJ^#S M|| n

2 GUN BATTERY 1$ cm CD %U!TA 216 DI ' vwv^ I Orientation sketch fo r right member of stereogram #4.== = =Road/'VV l-J "innCliff line

Communicatipn trench (wire)Gun positions Indicated by x, and lettered A- and B

-Stereogram #1 These 4 July 1944 photos show the excavation fo r A. Uncamouflaged spoil is a giveaway to activity in this area. -Stereogram 2 These 2 September 1944 photos show A has been camouflaged noevidence of casemate. There is a excavation at B.ectangularThe spoi l has been camouflaged with small plants and bushes.-Stereogram #3 These 11 December 1944 photos show the casemates finished and-camouflaged. Camouflage discipline is good.-Stereogram #4 This 12 January 1945 photography clearly shows the direction offire to be southwestward, covering the 7/est 3each.es Camouflagehas been improved. Shadow definition aids greatly in picking outthe installations. Note the shallow communication trench leadingin from the south.-Stereogram 5 These 4 February 1945 photos are included to show how easily theinstallations might be overlooked based on this one sortie.

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGI DEFENSE INSTALLATIONS ON IWO JIMA*\u0084 \u0084CINCPAC-ClNCPO^p.ill|37-^5. >

2 GUN BATTERY 15 cm CD GUNSTA 219 A

Orientation sketch fo r right member of stereogram #1.===== RoadA "M il.Cliff l ineAPP/ Trees%r% NORTH Gun positions indicated by x, and lettered A and B.**f/ >\/ l/t-Stereogram #1 These 15 June 1944 photos show two rectangular excavations. A hasa tarp or net over it. B has a ramp to facilitate spoil removal.-Stereogram #2 These photos taken 4 July 1944 show the two guns in position. Noattempt at camouflage.-Stereogram #3 These 2-September 1944 photos show guns in position and well camouflaged bushes have been planted in the spoil and tied onto theguns themselves. At this date the guns have no been casemated.-Stereogram #4 In these 4 February 1945 photos the guns have been completelycasemated and camouflaged. The concrete has been l iberallycovered with earth. The field of fire is clearly indicated. Thebattery OP is visible between and about 50* behind the guns. Note

the tunnel entrances to the positions. All casemated guns on theisland were connected by shallow communication (wire) trench ofthe type coming in from the west in this stereogram.-Stereogram #5 These pictures taken 9 February 1945 add nothing to stereogram#4, bu t are included to compare the amount of detail shown in photos of about 1/5000 scale and the amount of detail shown in photos of about 1/10,000 scale.

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMACINCPAC-CINCPOA BULLETIN 137-45.

5

15I

cm CD


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PROGRESSIVE CONSTRUCTION ANDCINCPAC-CINCPOA BULLETIN 137-45.

CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.CONFIDENTIAL.

12 cm NAVAL GUNSTA 183 X (SHORT)

NSTEREOGRAM No. 1

15 MAY 1944 ESSEX 52SCALE 1/5050

0 200

N STEREOGRAM No. 22 SEPT. 1944 CVL3O-20(P)

SCALE 1/54000 200 \u25a0

NM^^^^^^h-\%^^L4MM||

STEREOGRAM No. 312 JAN. 1945 VDS-21A

SCALE 1/48500' 200'

N STEREOGRAM No. 44 FEB. 1945 VDS-348

SCALE 1/48000 200 '

m31 u25a0*N 9

STEREOGRAMFEB. 1945

No. 5VDS-358

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|)cSnSEROGRESSIVE AND^IA^buFLjS(i ( " INSTALLATIONS ON IWO JIMA.CONSTRU^R^ JCIN?PAG-#lb|gPOA BwfofWsl W-45s ijyi fJ f|HBHBH|2 GUN BATTERY 12 cm NAVAL GUNS (SHORT)TA 183 X

Orientation sketch fo r right member of stereogram #1.*%//\u25a0 >/ Inorth iiiithi Cliff line

4 **-A Gun positions indicated by x, and lettered A and B.& , \

-tereogram #1 These photos taken 15 June 1944 show little activity at the gunsites.-Stereogram #2 These photos taken Z September 1944 show much activity at A andB. Brush has been cleared. There is possibly a gun at A.-Stereogram #3 In these 12 January 1945 pictures both casemates have been com-pleted and well camouflaged. B is much easier to pick out thanA using stereogram #3 above, but by comparing #3 with #2 both arereadily discernible.Stereogram #4 -In these 4 February 1945 photos, B is readily seen. Its f lreportstands out prominently. Due to the quality of the prints, Aishard to distinguish.-Stereogram #5 Both A and B are easily seen on these 9 February 1945 photos.

Note the amount of vegetation that has been cleared from theplateau between #1 and #5.

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is iJ ~'PROGRESS^ terffT|UCTION AND CAMOK OF DEFENSE INSTALLATIONS ON IWO JIMA' s.{ .*CINCPAC-ClNCPoMlliHfii j~M

4 GUN BATTERY 12 cmTA 183 W CD GUNS

VwAPR,"/NORTH/ n

Orientation sketch fo r right member of stereogram #1.:=:= Road y'""nil cliff,lined House

Gun positions indicated by x, and lettered A, B, C and D.

-3tereogram #1 These photos taken 15 June 1944 clearly show activity at B, Cand Din the form of circular excavations. A does not show muchactivity.-Stereogram #2 These photos taken 2 September 1944 show much improvement incamouflage. There are no casemates built at this time.-Stereogram #5 These photos taken 12 January 1945 clearly show well camouflagedcasemates in all four locations. A, B and G are easily discernible.D can readily be verified by comparing stereogram #3 with stereo-gram #1. Stereogram #1 shows location Das a hole in the cliff;stereogram #3 shows it filled in.-Stereogram #4 These photos taken 4 February 1945 show all four casematesclearly.-Stereogram #5 These photos taken at 20,000 feet on 9 February 1945 show allfour casemates clearly.

Progress in camouflage discipline as shown in this stereo setup is character-istic of the whole island. Note how the houses have been toned down. Note how thewater catch basin 50 feet west of B has been camouflaged with brush and stones tobreak up the outline of the cement drainage area. .

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CINCPAC-CINCPOA BULLETIN 137-45. fcQNRDENTIAC

12 cm CD GUNSTA 183 W

15STEREOGRAM NO. 1

MAT 1944 ESSEX 52SCALE 1/5050

0 200 'N

STEREOGRAM No. 22 SEPT. 1944 CVL3O-20(P)

SCALE.1/54000 200 1

N/STEREOGRAM No. 3

12 JAN. 1945 VDS-21ASCALE 1/4850

0' 200 1

STEREOGRAM NO. 44 FEB. 1945 VDS-348

SCALE 1/48000 200'

STEREOGRAM N0. .59 FEB. 1945 VDS-358

SCALE 1/96000 200 1 N

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CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.

14 cm CD GUNSTA 132 X, L

24STEREOGRAM NO. 1

MAY 1944 ESSEX 52SCALE 1/5950

0' 200'

STEREOGRAM No. 24 JUNE 1944 CV I33

SCALE 1/7250010 1 200'

STEREOGRAM NO. 3SEPT. 1944 VD4-87A

SCALE 1/10,0000' 200'

N

STEREOGRAM No. 4JAN. 1945 VDS-218

SCALE 1/54500 ' 200

STEREOGRAM No. 5FEB. 1945 VDS-34D

S.CALE 1/46500 200'

STEREOGRAM No.3 FEB. 194528PR5MC21-1ALT. 100 FT.

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSEJ^gALLATIONS ON IWQ JIMA.CINCPAC-CINCPOA BULLETIN 137-45. r If

4 GUN BATTEHY US tm CD GUNS AT FOOT OF SURBACPII YAMATA 132 X, L

Orientation sketch fo r right member of stereogram #1.=- RoadTrees

iiiiiiiiiCliffGun positions indicated by x, and lettered A, B , C and D.

-Stereogram #1 These photos taken 15 June 1944 show four clearings in the trees.Ground location would provide good coverage of approaches to Eastand West Beaches.-Stereogram Photos taken 4 July 1944 show that work is progressing in the2 - four clearings they are enlarged spoil has been removed.-Stereogram #3 Photos taken 1 September 1944 show concrete, uncamouflaged casemates in gun positions A and B, and a gun on concrete pedestal ingun position C. Position D is awaiting its gun.-Stereogram ,/4 These photos taken 12 January 1945 show all four positions completed. Dirt covers the concrete. The natural camouflage isparticularly effective in these photo 3taken during bright sun-light. Possible AW weapons are noted on B, C and D.-Stereogram 5 These .excellent photos taken 4 February 1945 clearly show thenature of the positions. Dirt has been mounded up over the concrete, vegetation planted on it. The fire ports and directionsof fire are clearly visible. Each emplacement definitely hasan AW on top of it. Ground reconnaissance showed the AW to be25 mm dual mount. Photos taken under a 14,000* overcast.-Stereogram #6 These 3 February 1945 obliques show how effectively camouflagedC and D are, Note the twin fire slits on the rocky outcrop aboveand to the west of D.

fr^K * fcHAiSt

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.fINCPAC-CINCPOA BULLETIN 137-45.

3 GUN BATTERY 12 cm HOWITZERSTA 217 A

| Orientation sketch fo r right member of stereogram #3.Road

TrailuiuijrCliff"-Trench" '7 iB C J Gun positions are shown by x, and lettered A, B and C.APP. NORTH

-Stereogram //I These 2 September 1944 pictures are included to show the nature ofthe terrain and the absence of installations.-Stereogram #2 These 11 December 1944 photos clearly show a short section of trench.Due to poor fields of fire offered by the terrain, suspicion isaroused as to the use of the trench.

-Stereogram By carefully comparing these 4 February 1945 pictures with stereogramjfl, it is obvious that installations have gone in at A, B, and C.For instance, C shows in 1 as open ground; in $2 there is a moundreached by the communications trench.

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CINCPAC-CINCPOA BULLETIN 137-45.

12 cm HOWITZERSTA 217 A

STEREOGRAM No. 12 SEPT. 1944CVL3O-20(P)SCALE 1/5450

010 1 200'

STEREOGRAM NO. 211 DEC. 1944 VDS-7B

SCALE 1/10,0000' 200'


SCALE 1/4600' 0 200

-X

JICPOA 50531-21219


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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMACINCPAC-CINCPOA BULLETIN 137-45.

4 TRIPLE MOUNT 25 mm AATA 217 L

STEREOGRAM NO. 111 DEC. 1944 VDS-7B

SCALE 1/10,0000 200'

N


SCALE 1/55000 200'

N

STEREOGRAM No. 34 FEB. 1945 VDS-34C

SCALE 1/47500 200*

N

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.'t,CINCPAC-CINCPOA BULLETIN 137-45. 4tfHHHHHI

fiMtji f /

\u25a0H mm. AA \"v v /%is& m '\u25a0y If ,

.

| Orientation sketch fo r rignt member of stereogram* * * #3.Truck,X 25 mm single mount 25 mm triple mountLJ revetment

*APR NORTH

-J

The three stereograms offer a comparison between single and triple mounts atvarious scales and l ight conditions. It is probable that the triple mount wassalvaged from one of the beached Jap LSTs on the ifiast Beach.

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PROGRESSIVE CONSTRUCTION AN D CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO J!MA.i^NiPAC-CINCPOA BULLETIN 137-45. \u25a0\u25a0\u25a0MM*

1 \1l fa* m *&mPfcWKHOtJSB-TA 181 C (SW)

-Stereogram #1 These 2 September 1944 photos show the nature of the terrain.Note the hasty trench system.-Stereogram 2 These 18 November 1944 obliques show a large mount of excavatedearth at A.-Stereogram #3 These 11 December 1944 photos show A near completion. There aretwo fire-ports firing north. The westernmost port accommodateda47mm the easternmost a 7.7 am MG, Note the excavation atB with concrete base already poured.-Stereogram 4 These 12 January 1945 photos show A completed. Note the OP ontop of the 7.7 MJ Position of th e blockhouse. The large pileof sand to seaward would have provided much protection from directhits by NGF. B's walls are being built as evidenced by the formsin these pictures. Note the pil lbox between A and B firing west.-Stereogram #5 These 3 February 1945 obliques clearly show A and B finished withtwo pillboxes in betv/een.-Stereogram #6 These 4 February 1945 photos merely present a complimentary ver-tical shot of stereogram #5.

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ONJ^OJIM^CINCPAC-CINCPOA BULLETIN 137-45. -^CONFIDENTIAL.

STEREOGRAM No.2 SEPT. 1944CVL3O-20(P)SCALE 1/5900

0' 200 '

1

18STEREOGRAM NO. 2

NOV. 1944 28PR4MC171-2ALT. 50 FT.

i- -I

STEREOGRAM NO. 311 DEC. 1944 VDS-7A

SCALE 1/10,0000' 200'

\N


SCALE 1/60000' 200'

STEREOGRAM No.3 FEB. 194528PR5MC21-6ALT. 50 FT.

5


SCALE 1/49500 200 ' s. N

JICPOA 50531-214 23


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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWOJIMA.CINCPAC-CINCPOA BULLETIN 137-45. CONFIDENTIAL.

DUMMY COVERED ARTILLERY EMPLACEMENTTA 197 V (SE)


SCALE 1/60000' 200'

STEREOGRAM No. 23 FEB. 194528PR5MC21-6ALT. 50 FT.


SCALE 1/49500 200*

N

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS Ohnjj^JM^,CINCPAC-CINCPOA BULLETIN 137-45.lla.i^j EL m 0%Ht^llff*S%DUMMY COVERED ARTILLERY EMFIJ&EBOTT *\ P\u25a0%l $ F|T (SE)A 197

Orientation sketch fo r right member of stereogram #1 .Road

A*-"S^ Trenches_ 'APP. .-'.'\u25a0* i Dummy covered artillery emplacementandnd letteretter A.. Twowo dummyummy pillboxesillboxes indicated byatt B andnd C.. zNORTH." C

\

-Stereogram #1 These photos of 12 January 1945 show the trenches to be shallowaffairs. Two dummy pillboxes, just mounds of sand with boxesfor fireports, are shown at B and C. A has not been constructedyet.-Stereogram $2 These 3 February 1945 obliques clearly show the flimsy nature ofA. B is clearly discernible as a pile of sand.-Stereogram #3 These 4 February 1945 photos show that the sand covering A had beenscooped up from near the walls. The trenches are mere traces, dueto the fact they were hastily dug in mid-1944 and to the desert-like drifting qualities of the sand. At the time of landing, theseinstallations would serve only as decoys.

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M?* ""7 lltl* . ?,;al Bra 1PROGRESSIVE CONSTRU||jq^ CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.f CINCPAC-CINCPOA BULLETIN 137-45.BLOCKHOUSE198 V (SE)

fo r right member of stereogramBlockhouse indicated by 0 ; flrelanes designated asOrientation sketch #2 ._APP. one and two.-. NORTH The period of blockhouse construction on the island wascovered photographically by small scale, non-stereo,bombing run photos. The first good stereo coverage ,o fFIRELANE/ '\^\ this blockhouse was the sortie from which stereogram #1ONE FIRELANE was taken.TWO-

Stereogram #1 These 11 December 1944 photos show the blockhouse nearlng_ completion. The fields of fire cut in the earth are a deadgiveaway.-Stereogram #2 Camouflage has been improved in this 12 January 1945 coverage.-Stereogram #3 These 3 February 1945 obliques are looking up firelane two. Notethe small trees attempting to camouflage the broad firelane.Note low wire and pillboxes in foreground.

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CAMOUFLAGE OF DEFENSE M ON IWO JIMA.CONFIDENTIAL. -u 2 5 a 0

'\ iiT

BLOCKHOUSE -i198 V (SE) 7

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.CINCPAC-CINCPOA BULLETIN 137-45. CONFIDENTIAL.ONFIDENTIAL.

MORTAR POSITIONS (150 mm and 81 mm)

\STEREOGRAM No. 1

11 DEC. 1944 VDS-7ASCALE 1/10,000

N 0 200'


SCALE 1/6000 '0 200


SCALE 1/4950010 1 200

i

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA*CINCPAC;CINCPOA BULLETIN 137-45. CONFIDENTIALONFIDENTIAL"**MORTAR POSITIONS (150 mm *afn


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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA."**"CINCPAC-CINCPQA p-IJMMM5 -g% \u25a0 ; 7\ J| I"f%ifhW la l COMMAND POST

TA 196 C

\ ~~~) Orientation sketch fo r right member of stereogram #1.Road\ * \ CP location Indicated by x.APR\ NORTH N>L_ JHigh altitude, small scale, non-stereo pictures disclosed the beginnings ofthis installation as a large excavation. Sven without stereo it was evident thatmuch concrete was poured. In Stereograms #2 and #4* the narrow gauge railroad withpushcar used to cover the concrete is evident. Note the four entrances.

Sis

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONSCINCPAC-CINCPOA BULLETIN 137-45. CONFIDENTIAL.

COMMAND POSTTA 198 C % *

3 .*

STEREOGRAM No. 1 \u25a011 DEC. 1944 VDS-7A

SCALE 1/10*000010 1 200" N


SCALE 1/6000010 1 200'

STEREOGRAM No. 3V

3 FEB. 194528PR5MC21-6 H NALT. 50 FT.

STEREOGRAM NO. 44 FEB. 1945 VDS-34C

SCALE 1/4950'010 1 200N

JICPOA 50531-218 31


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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWOJIMAm-MiiViCINCPAC-CINCPOA BULLETIN 137-45

WATER COLLECTION AND STORAGETA 218 V (NW)

STEREOGRAM No. 115 May 1944ESSEX 52

SCALE 1/47500' 200'

STEREOGRAM No. 22 SEPT. 1944CVL3O-20(P)SCALE 1/5000

0 200

34 FEB. 1945 VDS-34C

SCALE 1/46500 200 1

STEREOGRAM No.

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.'&NCPAOCINCPOA BULLETIN 137-45. **\u25a0\u25a0\u25a0\u25a0\u25a0

WATER COLLECTION AND STORAGETA 218 V (NW)

fo r right memberOrientation sketch of stereogram fl

-Stereogram tf-1 These 15 June 1944 photos clearly show the nature of the device.A small knoll has been cleared off, slope established towards theeast, with a catch basin at the foot. The white appearance is dueto the half inch layer of concrete over the water shed area.-Stereogram jj-2 These 2 September 1944 photos show the installations to be camouflaged with brush and stones. Between 15 June and 2 September allbuildings and water sheds were toned down in this manner. Thesecamouflaged water sheds were often confused with camouflaged nets.-Stereogram #3 These 4 February 1945 photos reveal a direct bomb h it on the in -stallation.

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.CINCPAC-CINCPOA BULLETIN 137-45. WKHKKMMKK&

*MORTAR POSITIONSTA 131 J

Positions referred to are the six clover leaf affairs arranged in a slight are.The installations were so destroyed by naval gunfire and arti l lery that it was hardto positively identify them. 150 mm mortar ammunition was nearby.

CASEMATSD 12 cm (SHORT) NAVAL GUNTA 132 R

This casemated 12 cm (short) naval gun, Indicated on the map as a coveredarti l lery emplacement, is shown in the center of Stereogram #1. Camouflage con-sists of heaping beach stones up over the concrete. Stereogram #2 gives a "downthe-throat" view of the installation. Note the effectiveness of the cover overthe fire port. The caves seen in the background are a few of those honeycombingSuribachl.

CAMOUFLAGETA 163 XThis oblique stereopair shows a covered arti l lery emplacement camouflaged withgrass tufts. Actually the regularity of the grass tufts makes the installation moreconspicuous. The field of fire cut in the bank is a dead giveaway.

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.CINCPAC-CINCPOA BULLETIN 137-45.

MORTAR POSITIONSTA 131 J

STEREOGRAM No . 14 FEB. 1945 VDS-34D

SCALE 1/46500 200' N

CASEMATED 12 cm (SHORT) NAVAL GUNTA 132 R

STEREOGRAM No . 14 FEB. 1945 VDS-34D L*i|

SCALE 1/4650 i0' 200 N

STEREOGRAM No . 23 FEB. 1945 28PR5MC21-1 N

ALT. 100 FT. \u25a0HCAMOUFLAGETA 163I

STEREOGRAM NO. 118 NOV. 1944 28PR4MC171-2

NALT. 50 FT .

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PROGRESSIVE CONSTRUCTION AND CAMOUFLAGE OF DEFENSE INSTALLATIONS ON IWO JIMA.CINCPAC-CINCPOA BULLETIN 137-45.''"

"\u25a0' "'' ""$ '"'Jsw' I*i. til !, "..,'.' H:1 ' SSS gJIJ'UNITED STATES PACIFIC FLEETAND PACIFIC OCEAN AREASMCH/md HEADQUARTERS OF . THE COMMANDER IN CHIEF

CONFIDENTIAL -13 June 1945 Serial DIS-131300From: Commander in Chief, U. S. Pacific Fleet and Pacific Ocean Areas.To: Distribution List.Subj ect CINCPAC-CINCPOA Bulletin No. 137-45.Progressive Construction and Camouflage of Defense Installationson IWO JIMA.Enclosure (A) Subject publication.

1.. Enclosure (A), forwarded herewith, need not be reported and when nolonger of value should be destroyed. No report of destruction is necessary.

1 By direction.DISTRIBUTION LIST

Copies ARMY Copies NAVY1 ComG-enAAF War Dept 2 OinCANIS NYC122211

ComGenAGF War DeptMlSRead ingPanel War DeptChiefPACMIRS Camp Ritchie MdCO CPICAirComSEA New Delhi IndiaComGenUSAFCTO APO 879 NYComGenUthAF APO 627 NY

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ComGenGHQSWPA APO 500CO AldGeogSec APO 500ComGenFEAF APO 925SIORAAFComAIdAFSWPA APO 923511

OinOearEchComPhibsPacc/o AdComPhibsPacCom3rdPhibFor, c/o AdComPhibsPacComfpthPhibFor1 Com7thPhibForMARINE CORPS 1 ea ComPhibGrp9 ComGenFMFPac 3 CO InterponONE Navy 32561 ComdtMarCorps 3 CO InterponTWO FPO SF332

ComGenlllPhibCorpsComGenVPhibCorpsComGenMarCorpsSchs BRITISH PACIFIC FLEET52 ea ComGenMarDivComGenTraComFMF Lejeune 11 COIS BPFCOIS EIS2 ComGenTraComFMF Pendleton

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Iwo Jima Camouflage (1945)