This United States Army manual, Army Regulation AR 135-200 Army National Guard and Reserve: Active Duty for Missions, Projects, and Training for Reserve Component Soldiers October 2020, prescribes policies and procedures for ordering Army National Guard (ARNG), Army National Guard of the United States (ARNGUS), and U.S. Army Reserve (USAR) Soldiers to other training duty (OTD), annual training (AT), initial active duty for training (IADT), active duty for operational support–Reserve Component (ADOS – RC), active duty for operational support–Active Component (ADOS – AC), contingency operations–active duty operational support (CO – ADOS), administrative–active duty for operational support (ADMIN – ADOS), operational active duty for operational support (OP – ADOS) and full-time National Guard duty for operational support (FTNGD – OS).