War Ensign of the en:Weimar Republic from 1919-1921; adopted but never used.
Flags of The World - War Ensign 1919-1921 (Germany)
War_Ensign_of_Germany_1903-1918.svg: Original uploader was R-41 at en.wikipedia
Flag_of_Weimar_Republic_(defence_minister_1919).svg: Jwnabd from German-Wikipedia
Wappen_Deutsches_Reich_(Weimarer_Republik).svg: David Liuzzo
derivative work: Mboro (talk)