9th Infantry Division

The 9th Infantry Division of the United States Army was activated in 1918 during World War I but did not see combat before the war ended. Reactivated for World War II, the division participated in the North African Campaign, the invasion of Sicily, and the Normandy landings, later advancing across France and into Germany. During the Vietnam War, the 9th Infantry Division was deployed to the Mekong Delta, where it conducted riverine and counterinsurgency operations from 1967 to 1969. The division was inactivated in 1991 after serving as a testbed for new organizational concepts during the late Cold War.