Sergeant Crimin was a member of Battery A, 99th Field Artillery Battalion, 1st Cavalry Division. He was listed as Missing in Action while fighting the enemy near Unsan, North Korea on 2 November 1950. He was presumed dead on 31 December 1953. His name is inscribed on the Courts of the Missing at the Honolulu Memorial.

Crimin was awarded the Purple Heart, 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.