6:31st Infantry

The 6th Battalion, 31st Infantry Regiment ("6/31st Infantry") has a distinguished history within the United States Army. Originally constituted during World War I, the 31st Infantry Regiment earned its nickname "Polar Bears" for its service in Siberia during the Russian Civil War. The 6th Battalion was activated during the Vietnam War as part of the 9th Infantry Division, where it engaged in significant combat operations in the Mekong Delta from 1967 to 1970. The unit earned several commendations for valor and professionalism before being inactivated following the U.S. withdrawal from Vietnam.