[1] On 17 November 1917, the War Department directed that the 6th Division be organized with a cadre from Regular Army units stationed at Camp Forrest, Georgia, Forts Leavenworth and Riley, Kansas, Fort Sam Houston, Texas, Vancouver Barracks, Washington, and other posts.

In May and June 1918, 15,000 Selective Service men arrived from Georgia, Indiana, Kentucky, Maryland, Minnesota, Ohio, Pennsylvania, South Carolina, and Wisconsin to complete the division.

Subordinate Units: The division went overseas in June 1918, and saw 43 days of combat in the Geradmer sector, Vosges, France, 3 September-18 October 1918, and during the Meuse-Argonne offensive 1–11 November 1918.

The 6th Division arrived at Camp Mills, New York, on 10 June 1919 after completing 6 months of training at Aignay-le-Duc, France, and occupation duty near and in Bad Bertrich, Germany.

These two regiments also supported the Reserve units’ conduct of the Citizens' Military Training Camps held at Fort Sheridan and Jefferson Barracks, Missouri.

During these maneuvers, the 6th Division headquarters was often formed in a provisional status to train Regular and Reserve officers in division-level command and control procedures.

After the GHQ maneuvers, the 6th Division was moved to Fort Leonard Wood, Missouri, for permanent station and arrived there 10 October 1941.

[3] Activated: 12 October 1939 at Fort Lewis, Washington State The division moved to Hawaii in July and August 1943 to assume defensive positions on Oahu, training meanwhile in jungle warfare.

Moving west of Toem, it fought the bloody Battle of Lone Tree Hill, 21–30 June, and secured the Maffin Bay area by 12 July.

The U.S. 1st Infantry Regiment operated on Bataan together with the Philippine Commonwealth forces, 14–21 February, cutting the peninsula from Abucay to Bagac.

The 6th Division faced a tough seesaw battle versus the Shimbu Group as the Japanese Shimbu Group created network of tunnels, artillery positions, and machine gun nests in the hill country of Antipolo, San Mateo, and Montalban in Rizal Province.

[4] After the war, the division moved to Korea and controlled the southern half of the United States zone of occupation until inactivated.

There the division remained throughout the Korean War, training troops and providing personnel for combat, but was never deployed overseas as an entity itself and was again inactivated on 3 April 1956.

In the American build-up during the Vietnam War the Division was reactivated in 1967 at Fort Campbell, Kentucky, and later a forward brigade was located in Hawaii.

The deployment began as a six-month rotation but was extended in August 1990 due to the Iraqi invasion of Kuwait which precipitated Operation Desert Shield and delayed the arrival of their relieving unit.