The 12th Infantry Regiment is a unit of the United States Army, recognized for its significant role in the history of American military service. Originating from the formation of the Regular Army in 1866, the regiment has served in various conflicts throughout U.S. history, including the Indian Wars, the Spanish-American War, World War I, and the Korean War. The 12th Infantry Regiment was deactivated as a parent regiment in 1957 but remains active through its lineal descendants. Known for its valor and service, the unit carries a rich tradition of military honor and has contributed significantly to the U.S. Army's legacy.