The 1st, 2nd, 3rd Infantry Regiments were mustered into federal service on 30 June 1916, for service on the Mexican Border Service and mustered out at Fort Sheridan, Illinois, on 19 January 1917, (1st Battalion), 28 February 1917, (2nd Battalion), and 14 December 1916 (3rd Battalion).
The units were disbanded at Camp Grant, Illinois, on 18 May 1919, (127th) and 19 May 1919 (128th).