"2002Z"^^ . . . . "Siegfried Koitschka"@en . . . "Koitschka, Siegfried"@en . "Dr. med. vet. Siegfried Koitschka (6 August 1917 \u2013 17 May 2002) was a German U-boat commander in World War II and recipient of the Knight's Cross of the Iron Cross (German: Ritterkreuz des Eisernen Kreuzes). The Knight's Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership."@en . . . "2002-05-17Z"^^ . . "German World War II U-boat commander" . . . "1917Z"^^ . . "1937Z"^^ . "1917-08-06Z"^^ . . .