Corporal Kammerer was a medic with the Medical Company, 15th Infantry Regiment, 3rd Infantry Division. He was Killed in Action while tending his wounded comrades in North Korea on 31 July 1952.

Kammerer was awarded the Purple Heart, the Combat Medical Badge, the Korean Service Medal, the United Nations Service Medal, the National Defense Service Medal, the Korean Presidential Unit Citation and the Republic of Korea War Service Medal.