My father in law's wedding cert. says "Gunner RA now on war service". his name does not appear in RA records. 1. As i understand it there was a "hostilities only" maritime unit where RA gunners were assigned to ships as DEMS gunners (correct me if I am wrong!). 2. Again as i understand it DEMS gunners signed on as "ships crew". 3. Did DEMS gunners have CRS10 records? As they do not seem to appear in RA records. Any advice how to trace a DEMS gunner from 1940 - 1942 would be very much appreciated!