Reichskriegsflagge
The term Reichskriegsflagge (German: [ˈʁaɪçsˌkʁiːksflaɡə], lit. 'Imperial War Flag') refers to several war flags and war ensigns used by the German armed forces in history. A total of eight different designs were used in 1848–1849 and between 1867–1871 and 1945.