Peenemünde Army Research Center
Zorner had to wait several weeks for another successful engagement. On 18 August 1943 Bomber Command carried out Operation "Hydra", an attack on the Peenemünde Army Research Center. At 01:53 over the Baltic Sea Zorner claimed a Lancaster followed by another Lancaster over Peenemünde at 02:03—his 13th victory. It was his last victory with 3./NJG 3. On 9 September 1943 he was appointed "Staffelkapitän" of 8./NJG 3.