You all seem very knowledgable so I will join in with this discussion rather than start a new one, if that's OK. I have just started researching my father-in-law's activities in Burma. I intend to, but haven't yet, obtained his service record.
I'm not sure exactly when he arrived in Burma but I think it was fairly late on - I know he arrived in Bombay in Sept 1943, was in Shillong area of India in Sept 44, and in Burma by the end of December. I think he was in Signals.
He has used lots of abbreviations and I'm trying to determine what unit (sorry I am just beginning this search and do not know correct terminology) he was in.
He has mentioned 9M and 8M.

Can anyone please tell me what these refer to?