Hi there, There are lots of posts about service abbreviations (online and in this forum) and I've search many of them, but I am still stumped at one that appears on my great-uncle's Record of Service. All of the abbreviations below, except one, are included in the List of Facilities of the British Commonwealth Air Training Plan (BCATP) in Canada. List of British Commonwealth Air Training Plan facilities in Canada - Wikipedia For example, 5 MD, Lachine = RCAF Station Lachine 5 Manning Depot and, 1 AGGTS, Quebec = Air Gunners Ground Training School However, I can't make out the abbreviation highlighted in yellow, specifically: 9 PAE, Montreal He was there for 3 weeks, between Wireless School and Air Gunners Ground Training School. I think I have deciphered the letters correctly. Any suggestions would be much appreciated.