401st Infantry
During the early part of World War II, after the formation of the division, the 101st had two two-battalion glider regiments, one of which was the 401st. When the TO&E for airborne divisions was changed to encompass a single three-battalion glider regiment, the 2nd Battalion of the 401st was transferred to the 82nd Airborne Division and the 1st Battalion of the 401st Glider Infantry Regiment served as the third battalion of the 327th GIR. This battalion was sea-landed in the Normandy invasion, glider-landed during Operation Market Garden and moved by truck to participate in the Battle of the Bulge.
- Constituted 23 July 1918 in the National Army as the 1st Battalion, 401st Infantry, an element of the 101st Division
- Demobilized 30 November 1918
- Reconstituted 24 June 1921 in the Organized Reserves as the 1st Battalion, 401st Infantry, an element of the 101st Division
- Organized in November 1921 with Headquarters at Milwaukee, Wisconsin.
- Disbanded 15 August 1942; concurrently reconstituted in the Army of the United States as the 1st Battalion, 401st Glider Infantry, an element of the 101st Airborne Division, and activated at Camp Claiborne, Louisiana
- Disbanded 1 March 1945 in France and the personnel and equipment designated and constituted as the 3rd Battalion, 327th Glider Infantry.
- Reconstituted 6 April 1945 in the Army of the United States as the 1st Battalion, 401st Glider Infantry; concurrently consolidated with the 3d Battalion, 327th Glider Infantry, and consolidated unit designated as the 3d Battalion, 327th Glider Infantry, an element of the 101st Airborne Division
Read more about this topic: 327th Infantry Regiment (United States)