6812TH SIGNAL SECURITY DETACHMENT (PROV)
APO 413 US ARMY
15 June 1945
The following is a brief description or the operations of the
6812th Signal Security Detachment in the European Theater of Oper-
ations from 1 February 1944 to 7 May 1945.
It was necessary to oompletely train the operators, engineers
and technicians before the work could be begun. The contents of the
following pages had to be thoroughay understood by each man.
The 6812th reached a degree of efficiency far above the
greatest expectations. When operations ceased on VE day the Detach-
ment was averaging in output runs per day approximately 38 o/o above
that of the British units engaged in the same work. This seems al-
most incredible when it is understood that the British had the bene-
fits of four years of experience. From the beginning of operations
to VE Day the 6812th Signal Security Detachment found the solutions
to a total of 425 German Enigna Keys.