High Quality Content by WIKIPEDIA articles! Reichskriegsflagge (Imperial War Flag) was the official name of the war flag used by the German armed forces from 1867 to 1945. A total of seven different designs were used during this period. The German war flag was in common use in World War I. It had Prussia's national colours of black and white, the eagle of Prussia, the Nordic cross, with the German imperial black-white red tricolour in the upper canton with an Iron Cross. In 1919, the flags of Imperial Germany were scrapped and replaced by those of the Weimar Republic: black-red-gold tricolour. German nationalists, such as the Nazis and Freikorps (see Marinebrigade Ehrhardt), used the old flag in protest against the Weimar Republic during the 1920s and 1930s. This included the 1920 attempt to overthrow the Weimar government, known as the Kapp Putsch.