This unit was formally organized in 1913 and, on 26 July 1941, was attached to US Army Forces – Far East (USAFFE).

Following the creation of USAFFE, the Philippine Department became, in effect, a corps area service and logistical command.

[2] About 2,500 troops served in a service or supply position, mainly quartermaster or medical units.

Total Strength: 22,532 (1,434 officers, 21,098 enlisted, including 11,937 Philippine Scouts).

[4] All units of the department wore the Philippine Department shoulder sleeve insignia, with the exception of the Philippine Division, which wore their own patch: a golden carabao on a red shield.