- Second World War (1939-1945)
- Major (Squadron Leader)
- Kommandeur Kampfgruppe z.b.V. 600
- Awarded on:
- May 9th, 1942
Awarded for the successes of his Kampfgruppe z.B.V. 600 in its aerial supply runs to Heeresgruppe Mitte and the troops in the Demyansk pocket during the winter of 1941-1942. Zeidler was also recognized for his total of 98 transport sorties flown.