|Rank||Private First Class U.S. Army|
|Date of Death||August 17 1950|
Korean Service Medal
National Defense Service Medal
Republic of Korea Presidential Unit Citation
Republic of Korea War Service Medal
United Nations Service Medal
Combat Infantryman Badge
Private First Class Jahnke was awarded the Purple Heart, the Combat Infantryman 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.
Private First Class Jahnke was a member of Company H, 2nd Battalion, 5th Cavalry Regiment, 1st Cavalry Division. He was captured, bound and murdered at Hill 303 near the Pusan Perimeter in South Korea on August 17, 1950.