David;
See Clive's reply reference what he has found within the various War Diaries that we have discussed in this thread pertaining to No.'s 1 and 2 Detachments, R.C.O.C.; No.'s 1 and 2 (Overseas) Detachments, R.C.O.C. and No. 1 Canadian Vehicle Assemby Unit. Clive's reply is located here:
CMP Assembly
Cheers