Hornhokl was seconded to the Luftwaffe in September 1939, joining the long-range naval reconnaissance unit. He commenced his U-boat training in August 1941. In January 1942 he joined U-732 with 3 Flotilla for his U-boat commander sea training and then the Torpedo Course in December 1942. On 25 January 1943 he took command of U-566 and while on patrol U-566 was attacked by Ventura aircraft on the 7 August, both aircraft were shot down. On 24 October 1943 a RAF Wellington of No 179 Squadron dropped six depth charges which badly damaged the U-boat. The crew were forced to abandon and scuttle U-566. In January 1944 he took command of U-1007 for six months and then commanded U-3509 which was hit during an air raid on Kiel and later hit by mines, so the crew transferred to U-3512, which was sunk by Allied bombs while berthed at Kiel in April 1945. He took command of U-2502 for three days, before commanding U-3041 at the end of April, surrendering on the 8 May 1945 to the Norwegians.
Kapitanleutnant Hans Hornkokl
Hand signed 5in x 7in photograph - numbered and certified on reverse.
Accompanied by matching biography card giving U-boat service details.