English: Ernst Freiherr von Althaus' Halberstadt D.II fighter from late 1916, showing characteristic lower wing trailing edge "droop" for the design.
Date
Source
Photo from pg.12 of my copy of Peter M. Grosz's Halberstadt Fighters-Classics of World War I Aviation, Volume 1.
Author
Unknown, photo is from book author Peter M. Grosz's collection.
Licensing
Public domainPublic domainfalsefalse
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