AR 135-200 governs policies and procedures for ordering Army National Guard and U.S. Army Reserve Soldiers to specified training and support duty.
View AR 135-200 on armypubs.army.mil
AR 135-200 addresses travel and duty dates, annual training, other training duty, initial active duty for training, operational support, justice, mobilization disposition, and sanctuary. It establishes approval, ordering, reporting, strength-accounting, and internal-control requirements.
Unless residing within reasonable commuting distance, the date of entry on duty is the date the Soldier officially begins travel by authorized mode. (paragraph 2-2)
The Soldier is not authorized to report for duty earlier than the report date shown on his or her orders. (paragraph 2-2)
A Soldier reporting earlier than the directed reporting date, and in excess of authorized travel time, will be in a nonduty, nonpaid status. (paragraph 2-3)
A Soldier may be released early from AT when required by a Family or other emergency as determined/authorized by unit of assignment. (paragraph 2-5)
HRC must coordinate all AD (AT, OTD, and ADOS) with the IMA command or organization before ordering the Soldier to duty. (paragraph 2-5)