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.Add1t1~nal tnto~mat1on r..egerd1ng qryptograpblc mater1Pl 1saued to rorelgn Nations. 

SIGCUM 

A. The present records show that th• Br1t1sh 

nl)w )lave 18 units ot SIGOUM. Thla 11 an aooountab111tJ 

reopr4 ot 24 April 1947. I 

I ,b. The orlglnal prov1s1ona govern:ng'lssuance 

ot IIGCUM to the Br1t1sh ls an AG letter of 2 August 1944 

end,ot 24 June 1944. these two letters state: 

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' •2. The w~r Depa~tment bas autborlaedttbe 

diatributlon of the Converter M-228 to .Aaer~oan 

Commanders who ma7 in turn issue 1t to Br1tlsh 

C«>mmanders tor use on ~·ire lines UIJr .)olntlt b7 

Unlted States and Brttlsh forces 1~ ootablneC! 

operations •.•• • 124 June 1944) , 

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1 In all other respects the convert~~vii1 

be viewed as a Untted ltetea Army orrptogr&pblc 4ev1ce issue io Br1t1ah units on • baals s1•1lar 

to ihat used ln tbe issue ot the equipment ~o 

United States A.n17 unlts.• (2 August 1944) 

\ c. rrom that tlme OD the ~beater Signal Officer 

1•sued to the Brltlsh M-228 un1ta "1.tb accountab111ty b~1ng 

kept 1n the TSO records. At the end ot the war these un1ta 

were all recalled and tbe 18 unit• ln a above ott1c1,~1rt tr~nsterred to ~he British. (Whether the recall was pbytU,oal 

or merely a tra.nsfer on paper tan' t known.) / , , ~. ' to 

d I,t m1gbt be possible by gotng through /tne ' "-

records of 11!'0, l!O, etc., to determine how many units t'• 

Brit1eh had ~r1or to 1947. Major Rale7 says tbat lb MTO ·, 

he 1saued the Br1 tish 3 SIGCUll units. I know the Bpitisb · 

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had 2 un1ts, at least, 1D the Pao1f1c but can not 11nd ~ti,, 

whether these came from ITO or from 8WPA. ( 1 J(~ 

2. STRIPS AND STRIP BOARDS I. 

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a. 5 different strip s1eteaa conslst1ng ot 3~ l 

different editions o~n be accounted tor from 1b.is Agency!. ' 

There are probably a few other •1•tema which were aade 1 t 

Up wh1ob cannot be 1dent1t1ed. , f \ 

b. Many systems we~e made up 1D bulk and sh~pped 

to the !SO's :or use and distribution •• tbe1 saw flt, fbere· 

1s no 1ntormat1on on these, without golng through tbotfaOPa 

records, as to which ones, 1t any, were 41strlbuted "to~\· 

different nations. / 

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eclassifi ed and a roved for release b 
c. There ts no wa1 ot determlnlng the number 

ot atr1P boards d~str1buted etther to U.S Army units or 

to foreign nat1ona. The Navy device CSP 845 fo, some t1~e WFS accounted for as a rcg\atered document. The 

M-138 was eaoounted tor only as an l~em of property. Later 

all of the devtces, CSP 845, M-138 • SIGWOWO were accounted 

for es items ot property. Some morl~h• Rgo all ot the 

reoor6s on these dev1oes were destro1ed.. At tbe present '1me lt 18 poas1ble onl; to tell how many boArds arP 1n 

present use. 

3. M-209 

, The M-~09 ts e1m1ler to ~be atrlp board. It 

1s po&£1ble to tell how many unite wer~ produced an~ bow 

many units ere still ln existence. There are no reaorda 

now ~vallabl~ to tell what units we.,re 1&SJPd to whom\ \ I , 

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1 4. In reger4 to tbe qu~st1on ri~s~d concerntng the 

mention ot correspondence \n pare. 3c bt the tlrsu~m.-.io, 

this was a telegrem about sending SEOReT trattlc o,e~ 

BIGOUM. The basic aorrPs ondenoe bad been 1n 8 r~uf.1945 when BIGCUM bad been !•sued to tbe Brt tteh Fleet Wq o 

unit 1n Ce,lon in order to send tratt10 from Colomb \to ,Gut•· This was the onl1 mPana ot tr~asm1ss1on betw en 

these two places. ~be traffic vaa supposed to be ~CllET &na the telegrams g~ve otficlal approval to use SIQ"''ll for 

sucb tratf'lo over rad lo.· ' 

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