. . . . "1914"^^ . . "FFA 32, KEK B, Abwehr Kommando Nord, Jasta 1"@en . . "Gustav Leffers"@en . "1916-12-27"^^ . . . "Pour le Merite, Royal House Order of Hohenzollern, Iron Cross, Friedrich-August Cross"@en . "Gustav Leffers (2 January 1895 \u201327 December 1916) was a German flying ace in World War I, credited with 9 victories."@en . . . "Vicinity of Cerisy, France"@en . "Wilhelmshaven, Germany"@en . "1895-01-02"^^ . "Leutnant"@en . . . . "Gustav Leffers"@en . . . . . . . . . "Luftstreitkr\u00E4fte"@en . "Gustav Leffers (2 January 1895 \u201327 December 1916) was a German flying ace in World War I, credited with 9 victories."@en .