When destruction is authorized by the issuing office, the eode will be destroyed by buening. When for any reason all copies of the code are destroyed, # report of that feet will be made lo the signal officer, GHQ. 5. Tn case of Joss or comprornise of the code, a message will be prepared in onother cryptographic system and will be sent by fastest possible means through channels to the signal officer, GHQ. Lf in danger of capture, the book will be destroyed by burning, and a report will be made to tbe issuing office. 8, Special instructions.—a. fntermixture of ede and plain text prokibited —"The text of a messuge in this code will consist solely of code groups except as follows: (1) The writer's serial number of message, if present, will be lefo in clear. It will appanr us Uke vory first group of the text of the meseage.
DesignationTM 11-460
EditionJan 1942
StatusSuperseded
Pages8
FunctionComms Signal
EchelonDivision
CollectionHistoric
Public domain (U.S. Government work)