Edward Ryan's final film performance.
Some of the incidents in this film were based on the experiences of Captain Lillian M. Kinkela, a highly-decorated member of the flight nurses of the 801st Medical Evacuation Sqaudron sent to Korea. Captain Kinkela, from Richmond, California, flew over 175 missions while in Korea, taking part in the evacuation of the Chosin Reservoir, and also in the retreat down the Korean peninsula to Taegu, flying out casualties from Sinanju, Inchon and Wonson