the Junkers Company of Dessau, Germany, produced the world’s first all-metal aircraft, the J 1, which was followed by the first all-metal aircraft intended for military service, the J 2 in 1916 ...

Built in July 1918 as one of the 227 built, at the Junkers-Fokker-Werke AG factory at Dessau (with the company factory type designation being the confusing J.4) and given construction number 252 ...