A
171st Infantry Brigade
U.S. Army
The 171st Infantry Brigade was first constituted on 5 August 1917 in the National Army and assigned to the 86th Division during World War I. It was organized at Camp Grant, Illinois, but did not see combat before being demobilized in 1919. Reactivated and redesignated several times throughout the 20th century, the brigade served primarily as a training unit during the Cold War and later under U.S. Army Alaska, where it supported arctic warfare training. The 171st Infantry Brigade was inactivated in 2013, concluding nearly a century of service to the U.S. Army.