During the Armistice period, the AEG DJ.I, a ground attack aircraft from the late World War I, underwent thorough evaluation.
This streamlined biplane, designed for a single pilot, began its assessment in September 1918.
It was armed with two 7.92 mm Spandau machine guns and carried a light bomb load.
Notably, the aircraft featured aluminium fuselage coverings, I-type interplane struts that eliminated the need for flying or landing wires, and protective armour.
Sources
AEG Aircraft of WWI-J Herris.
German Aircraft of the First World War-P Gray & O Thetford.
The Complete Book of Fighters-W Green & W Swanborough.