"The Army Group Rupprecht of Bavaria or Army Group A (German: Heeresgruppe Kronprinz Rupprecht von Bayern) was an Army Group of the German Army, which operated ...
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on the Western Front under command of Rupprecht, Crown Prince of Bavaria , between 28 August 1916 and 11 November 1918 during World War I. It was formed from the short-lived Army Group Gallwitz under Max von Gallwitz (19 July - 28 August 1916)." - (en.wikipedia.org 30.01.2020)
