F/Lt Clarke was the pilot of Spitfire aircraft JK-991 and was engaged in an offensive sweep over the Dalmation Coast when the radiator was pierced by ground fire from enemy troops.
F/Lt Clarke gained 5,000 feet altitude, rolled the Spitfire over on its back and bailed out. His number two stated that F/Lt Clarke's parachute became entangled in the aircraft and he couldn't escape. The aircraft crashed near Itina, Yugoslavia.
