. "1917Z"^^ . "1890Z"^^ . . . . . . "Hans Berr"@en . "1917Z"^^ . . . "1917-04-06Z"^^ . . "Jasta 5" . . "Oberleutnant Hans Berr was a professional soldier turned World War I flying ace credited with ten aerial victories. He was one of the German aces who pioneered the first \"flying gun\", the Fokker Eindekker."@en . . "1890-05-20Z"^^ . "Prussian flting ace" . "Berr, Hans"@en . "1908Z"^^ . "German Empire" .