Private First Class Dennison was born 15 October, 1914 and died 21 May, 1951 (aged 36). He is buried in Grove Cemetery in Verona, New York. Pfc Dennison was a veteran of World War II. In Korea, he was a Light Weapons' Infantryman with Company F, 2nd Battalion, 35th Infantry Regiment, 25th Infantry Division, He was Killed in Action while fighting the enemy in South Korea on May 21, 1951. Private First Class Dennison was awarded the Purple Heart, the Combat Infantryman's Badge, the Korean Service Medal, the United Nations Service Medal, the National Defense Service Metal, the Korean Presidential Unit Citation, the Republic of Korea War Service Medal, the European Theater of Operations Medal and the World War II Victory Medal.