ABOUT 1-23rd infantry battalion
- June 3, 1917: The 23rd Infantry Regiment is assigned to the 2nd Division during World War I.
- July 1, 1917: The 23rd Infantry Regiment arrives in France to participate in World War I.
- November 1918: The regiment takes part in the Meuse-Argonne Offensive.
- February 1950: The 1st Battalion, 23rd Infantry (1-23rd) is activated at Fort Lewis, Washington.
- July 1950: The 1-23rd Infantry deploys to Korea at the outbreak of the Korean War.
- January 1951: The battalion fights in the Battle of Chipyong-ni, a pivotal defensive action in the Korean War.
- June 1972: The 1-23rd Infantry is assigned to the 2nd Infantry Division in South Korea.
- 1995: The battalion relocates to Fort Lewis, Washington, as part of the 3rd Brigade, 2nd Infantry Division.
- 2004-2005: 1-23rd Infantry deploys to Iraq for Operation Iraqi Freedom.
- 2012-2013: The battalion serves in Afghanistan during Operation Enduring Freedom.