Private First Class Robillard was a member of Service Battery, 38th Field Artillery Battalion, 2nd Infantry Division. He was taken Prisoner of War while fighting the enemy near Kunu-ri, North Korea on November 30, 1950 and died while a prisoner at Camp 5 in North Korea on March 31, 1951. His remains were not recovered. His name is inscribed on the Courts of the Missing at the Honolulu Memorial.