The 36th Infantry was stationed at Camp Devens, Massachusetts, as of June 1919 as a separate regiment, and transferred by marching to Fort Jay, New York, arriving there on 13 October 1921.

The regiment, less the 2nd and 3rd Battalions, was affiliated with the New York University ROTC program on 18 April 1930 and organized at New York City as an RAI unit with Regular Army personnel assigned to the ROTC detachment and Reserve officers commissioned from the program.

The regiment was concurrently activated, less Reserve personnel, at Camp Beauregard, Louisiana.

The 1st Battalion, 36th Infantry Regiment (Spartans), was reactivated at Ray Barracks, Germany, in 1996, having been reflagged from 3-5 CAV, which was stationed at nearby Kirchgöns.

The battalion deployed to Iraq for a second time in 2006, where it provided security and stability to the city of Hit.