In early September 1944 , Polk assumed command of the 3rd Mechanized Cavalry Group , then in combat near Metz , France .
In early September 1944 , Polk commanded it until the end of the war .
In early September 1944 , Polk assumed command of the 3rd Mechanized Cavalry Group , then in combat near Metz , France , and commanded it until the end of the war .