Private First Class Gieseking was a member of Company H, 3rd Battalion, 7th Marines, 1st Marine Division. He was Killed in Action while fighting through Toktong Pass into Yudam-ni, North Korea, on 2 December 1950.

Gieseking was awarded the Purple Heart, the Combat Action Ribbon, 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.