Designed by Julius Berg and produced by the Austrian branch of the German Aviatik company, the D.I fighter was one of the better Austrian aircraft of WWI, although pilots preferred the Albatros D.III. Some 700 examples were built in 1917 and 1918. The Austro-Daimler engine was prone to overheating. Note the large radiator filler cap - it almost looks like a crafted mascot!