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MH IC O PY 3 F M 21- 40

K I4 CW A R D E PA R T M E N T

B A S I C F IE L D M A N U A L

j

D E F E N S E A G A IN S T

C H E M I C A L A T T A C K

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FM 21-4 0

B A S IC F IE L D M A N U A L

t T~

D E F E N S E A G A I N S T C H E M I C A L

A T TA C K

Pre pared u nde r dire ction o f the

Chief of the Chemical W arfare Service

UN IT ED ST ATES

GO VERN MENT PR INTIN G OFFICE

W ASHING TON: 1940

For sale by the Superin tendent o f Doc ume nts. Washing ton, D . C. - Price 20 c en ts

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WAR DEPARTMENT,

WASHINGTON, M a y 1,1940

F M 21-40, Defense A g ain st Chemical Attack, is publish

fo r th e in fo rm a tio n and guidance of all concerned.

[A .G . 0 6 2 .1 1 ( 2 - 2 8 - ^ 0 ) . ]

B Y ORDER OF THE SECRETARY OF WAR:G . C . M A R S H A L L ,

Chief o f Stafl

O F F IC IA L :

E . S . ADAMS,Major General,

Th e Ad ju ta n t General.

I I

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BASIC FIELD MANUAL

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AT TAC K

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i f .

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Pe

>

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10

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O

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DEFENSE AGAINST CHEMICAL ATTACK Q

15

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10-11 AT TA C K

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11 -12

D R O P S DROP S DR O PLETS

2 5 YDS .S '

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1 2 - 1 6

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21

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16 - 17 BE F EN SE A G A I NS T C H E M I C A L A T T A C K

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17 -18

23

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18 -20

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2 0

W S -

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2 0

26

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2 0

6 . P rin ci p a l p ar ts o f se r v ice g a s m a sk .

OU T LE T V A LV fiG U A RD SO LI

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2 0 D EF EN SE AGA I NST CH E M IC A L A T TAC K

-H OSE ST EM

N O ZZ L E EL B OW

IN L E T V A LVED IS C

INNE R TU B E

2 8

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21- 22

H OO K C LA S P

SL ID E

LO W ERCA N ISTE RSTRA P

ANT ID IM

S H OULD E R ST RAP

E YE C L ASP

SNA P FAS T ENER ST UD

F L AP

SN AP FA ST ENE RSO CK ET

H OS E P OC KET

UPP ER CAN ISTER STR AP

AN TI DIM ST RAP

224 3 994 0 3

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2 2 D E F E N S E A G A IN S T C H EM IC A L A T T A C K

I N T A K E T O I ! '

CO L LE C T I VPR O TE C TOR ^

CO LLEC TIVE P R O TE CT Cm

3 0

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FRAMES NOT CLOSER

THAN 4

F

AT TOP,

FOR MEDICAL S

T

N

8F

SLOPE OF DOOR FRAME

S

N

I

-LAN

E

ROLLED

S

FD

I

PROTECTIVE COVER

S

F

WEIGHTS=.

BLANKET OVERLAPS

FRAME IN CASE OF

PROJECTING ENTRANCE.

~

-BLANKET WHEN ROLLED UP MAY

BE K

EPT IN PLACE BY A STRING

AND LOOP ATTACHED TO A HOOK Oft

BY A SHELF. SEE DETAIL ABOVE.

BLANKET UNROLLED

WEIGHTS

BLANKET ROLLED

BLANKET EXACT ~=

-.

WIDTH OF EN--

TRANCE FRAME

SEE THAT ALL

JOINTS ARE CLOS

ED AND THAT THERE

ARE NO OPENINGS.

J --

s

i m

'

~2-.

*

-

y /

o

0

0

ARRANGEMENT O

F GAS BLANKETS

HORIZONTAL GALLERY

BA

N

D

I

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22-2 4

33

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25

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25-27

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47

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nj 4-**4-;,* C%AU QU CfcblUll.

8 2

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8 4

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63

GLA SS TUBE FO R USE IN FIELD IDENTIF ICA TION

O F

CHEMICA L A G E NTS

7H-GLASS TUBE

L . E A O WIRE S-

S ET-UP WITH ONE DETO NATOR SET-UP WITH TW O O R MO RE

D ETONATORS

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CLASS TUBE OF AGENT

IN PREPARED HOLE-

FO R DETONATION..

D E TO N ATO R BELOWT U B E OF A G E N T

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70

P A LATE

CURTAIN

EYE S I

U N D E R TA I L

C O R O N ET -

F E T L O C K J O IN T

S H E AT HB EHIND E L B O W -

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I T E LINE

115

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F f l C E P I E C E

EYERI NG

LECT OR PO RTS

ALVE MIV

V ALVE DISC

VA LV E GUARD

VALVE MV

UASK, TRAININQ M l MASK, I R A N N G M I A I

Palis

INLET

V ALVE

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1 3 2

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C N C A P S U L E S

T I N C A N

B R I C K S -

JM A L L T I N(JAR OR CAN LID)

HOLES

CANDLE

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