The 4th infantry was designated the 166th U.S Infantry Regiment by the U.S. War Department .
On August 5 , 1917 , Beightler was commissioned as a first lieutenant in the U.S. Army , serving as an adjutant for the 3rd Battalion .
The 4th infantry was designated the 166th U.S Infantry Regiment by the U.S. War Department .
On August 5 , 1917 , Beightler was commissioned as a first lieutenant in the U.S. Army , serving as an adjutant for the 3rd Battalion .