In what year was a commander of Ergänzungs-Jagdgruppe Ost who claimed a total of 212 aerial victories born?
Ergänzungs-Jagdgruppe Ost:  Commanders included Hubertus von Bonin, Hermann Graf, and Viktor Bauer. Hermann Graf: Hermann Graf (24 October 1912 – 4 November 1988) was a German "Luftwaffe" World War II fighter ace.
i don't know