. "1891Z"^^ . "1920Z"^^ . . . . . . . . "German Empire" . . "1891-03-24Z"^^ . . . . "Hauptmann Oskar Gustav Rudolf Berthold (24 March 1891 \u2013 15 March 1920), commonly known as Rudolf Berthold, was a German flying ace of World War I. Between 1916 and 1918, he shot down 44 enemy planes\u201416 of them while flying one-handed. Berthold had a reputation as a ruthless, fearless and\u2014above all\u2014very patriotic fighter."@en . . . "Oskar Gustav Rudolf Berthold"@en . "1920-03-15Z"^^ . "Iron Knight"@en . "1910Z"^^ . "Berthold, Rudolph"@en . "1919Z"^^ . "German flying ace" . . .