Captain Maynard was an aerial observer with Headquarters Battery, 63rd Field Artillery Battalion, 24th Infantry Division. He was taken Prisoner of War while fighting the enemy along the Kum River, South Korea on July 14, 1950, forced to march to North Korea on the "Tiger Death March", and died while a prisoner at An-Dong, North Korea on June 30, 1951. His remains were not recovered. His name is inscribed on the Courts of the Missing at the Honolulu Memorial.