Translation of "F 3663 H Staff 3 C.M.P. & D.B. C.A.E"

[Tony Ward]

Can anyone help me to further my search for a Canadian ex-serviceman by ‘translating‘ the following for me:-
F 3663 H Staff 3 C.M.P. & D.B. C.A.E.
The soldier, whose surname and initial I have, served in Alton/Odiham area of Hampshire, England in early 1946. The above references are the only other information I have.
Please reply if you can tell me what the references stand for.

 

[pat]

I belive it stands for HQ staff third Canadian military police and detention barracks Canadian army Europe.