On July 21, 1943, Jagdgruppe Süd der ObdL was formed as a high-altitude fighter unit to combat RAF Mosquito twin-engine reconnaissance aircraft. On August 15, 1943, the unit was redesignated JG 50. Major Graf was tasked with leading JG 50, a role he performed until the unit was disbanded in October 1943 and absorbed into I./JG 301. Graf was to claim three victories while serving with this unit, including two USAAF B-17 four-engine bombers shot down on September 6. Herman Graf is credited with 212 victories in over 830 missions. He recorded 202 victories over the Eastern Front. Of his ten victories recorded over the Western front, six were four-engine bombers.
