See this thread in the Great War Forum
http://1914-1918.invisionzone.com/fo...hp/t60847.html
The question was like yours:
I originally posted this to the war in the air section as I thought it may have an air service connection but I still have not found an answer.
I am looking for the meaning (in the context of the A.E.F.) of "A.S.M. Regiment"
I have found several references to it in service records and what prompted my initial interest is it was given as a return address on a package that was sent to family members from France. I have not yet been able to discover what it is. Any help appreciated. I have checked several print and online guides to acronyms without finding anything obviously relevant.
Chris
The answer:
An "ASM regiment" was an "Air Service mechanics regiment." As far as I an tell, there were four of these units, each of which was composed of a dozen or more separately deployable companies.
As might be expected, most of the men who served in these companies were, to use a term that soon passed out of the American military vocabulary, "fitters."