Caption:
Polish-Lithuanian-Teutonic War (1409-1411). Conflict between Kingdom of Poland and Grand Duchy of Lithuania against the Teutonic Knights. Painting depicting the Battle of Grunwald (Tannenberg) (15 July, 1410), 1878, by Jan Matejko (1838-1893). Detail, Vytautas the Great (1350-1430) Grand Duke of Lithuania. National Museum. Warsaw. Poland.