Task Force Faith and Operation Undertone were both components of which branch of the U.S. military?
Task Force Faith: Task Force Faith, also known as Task Force Maclean (and by its official designation, Regimental Combat Team 31 (RCT-31)) or the Polar Bear Regiment (), was a United States Army unit destroyed in fighting at the Battle of Chosin Reservoir during the Korean War between 27 November – 2 December 1950. Operation Undertone: Operation Undertone was a large assault by the U.S. Seventh and French 1st Armies of the U.S. Sixth Army Group as part of the Allied invasion of Germany in March 1945 during World War II.
United States Army