Battalion of Infantry; redesignated 7 February 1901 as the 1st Battalion, 26th Infantry) (2d Battalion organized March–April 1901 at Fort McPherson, Georgia; redesignated 29 May 1901 as the 1st Battalion, 27th Infantry—hereafter separate lineage; new 2d Battalion, 26th Infantry, organized 1 July 1901 in the Philippine Islands) (3d Battalion organized in January 1901 at the Presidio of San Francisco, California, as the 2d Provisional Battalion of Infantry; redesignated 8 February 1901 as the 1st Battalion, 27th Infantry; redesignated 29 May 1901 as the 3d Battalion, 26th Infantry) Assigned 8 June 1917 to the 1st Expeditionary Division (later redesignated as the 1st Infantry Division) Relieved 15 February 1957 from assignment to the 1st Infantry Division and reorganized as a parent regiment under the Combat Arms Regimental System Withdrawn 3 April 1987 from the Combat Arms Regimental System, reorganized under the United States Army Regimental System, and transferred to the United States Army Training and Doctrine Command Withdrawn 15 January 1996 from the United States Army Training and Doctrine Command Redesignated 1 October 2005 as the 26th Infantry Regiment 1st Battalion, 26th Infantry Regiment Organized 25 December 1900 in the Regular Army at the Presidio of San Francisco, California, as Company A, 1st Provisional Battalion of Infantry Consolidated 7 February 1901 with Company A, 26th Infantry (constituted 2 February 1901 in the Regular Army), and consolidated unit designated as Company A, 26th Infantry (26th Infantry assigned 8 June 1917 to the 1st Expeditionary Division (later redesignated as the 1st Infantry Division) Reorganized and redesignated 15 February 1957 as Headquarters and Headquarters Company, 1st Battle Group, 26th Infantry, and remained assigned to the 1st Infantry Division (organic elements concurrently constituted and activated) Relieved 14 April 1959 from assignment to the 1st Infantry Division and assigned to the 8th Infantry Division Relieved 24 October 1962 from assignment to the 8th Infantry Division and assigned to the 2d Infantry Division Relieved 15 February 1963 from assignment to the 2d Infantry Division and assigned to the 1st Infantry Division Reorganized and redesignated 13 January 1964 as the 1st Battalion, 26th Infantry Inactivated 24 February 1983 in Germany and relieved from assignment to the 1st Infantry Division Headquarters transferred 3 April 1987 to the United States Army Training and Doctrine Command and activated at Fort Dix, New Jersey Inactivated 15 January 1996 at Fort Jackson, South Carolina, and withdrawn from the United States Army Training and Doctrine