Private First Class Deanda was a member of Headquarters Company, 1st Battalion, 34th Infantry Regiment, 24th Infantry Division. He was Killed in Action while fighting the enemy near Taejon, South Korea, on 20 October 1950. His remains were not recovered. His name is inscribed on the Courts of the Missing at the Honolulu Memorial.

Deanda was awarded the Purple Heart, the Combat Infantryman's 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.