Jagdstaffel 90

Background
Royal Prussian Jagdstaffel 90, commonly abbreviated to Jasta 90, was a World War I "hunting group" (i.e., fighter squadron) of the Luftstreitkräfte, forerunner to the Luftwaffe.

History
Jasta 90 was founded on 28 or 29 October 1918. Its predecessor was Kampfeinsitzerstaffeln (scout detachments) 1a and 1b. The new squadron never became operational.