E-1. APA All Acronyms. Private First Class. Pay Grade. AIT or “A School”: Advanced Individual Training.The hands-on career training and field instruction each service member receives before being qualified to do a specific military job. 08/01/1907 … Military acronyms: The basics for new recruits. Branch.Retrieved September 23, 2020, from https://www.allacronyms.com/branch/abbreviations/military In simple terms, the U.S. Armed Forces are made up of the six military branches: Air Force, Army, Coast Guard, Marine Corps, Navy and Space Force. branches of service & designations . Private 2. Title. https://en.wikipedia.org/wiki/List_of_U.S._government_and_military_acronyms The list of Branch abbreviations in Military. Abbreviation. The one exception is the Navy, which has an O-11, a fleet admiral. abbreviation begin date end date. Private. The pay grades that correspond to these ranks are abbreviated as E-1 through E-9 for enlisted and O-1 through O-10 for officers. PVT. Every branch of the military has enlisted ranks and officer ranks. branch of service. us army air forces usaaf 06/20/1941 09/17/1947 us army air corps usaac 07/02/1926 06/19/1941 us army signal corps aero division usa aerodiv . 2020. AAFES: Army and Air Force Exchange Service.The retailer that operates post exchanges on Army and Air Force installations. PV2. Army Ranks.