what is tdy military

Temporary Duty Travel (TDY) is a designation reflecting a United States Armed Forces service members or civilian Department of Defense employee's temporary duty assignment. It is a type of order that military personnel can be given during their time of service. TDY refers to duties that are carried out away from a personnel’s permanent or designated duty station, usually for a period of up to 179 days. During TDY, service members or DoD civilian employees may be reimbursed for expenses such as travel, lodging, meals, and incidentals. TDY is one of the three types of orders that military personnel can be given during their time of service, the other two being Permanent Change of Station (PCS) and Temporary Additional Duty (TAD).