Career
Kerstetter joined the Army from his birthplace of Centralia, Washington in March 1942, and by April 13, 1945 was serving as a private first class in Company C, 130th Infantry Regiment, 33rd Infantry Division. On that day, during a fight to take a ridge near Galiano, Luzon, the Philippines, he advanced ahead of his squad and engaged the Japanese soldiers alone until running out of ammunition. He left the army with the rank of sergeant.