Battle of GrunwaldThe Battle of Grunwald, Battle of Žalgiris, or First Battle of Tannenberg, was fought on 15 July 1410 during the Polish–Lithuanian–Teutonic War. The alliance of the Crown of the Kingdom of Poland and the Grand Duchy of Lithuania, led respectively by King Władysław II Jagiełło (Jogaila), and Grand Duke Vytautas, decisively defeated the German Teutonic Order, led by Grand Master Ulrich von Jungingen. Most of the Teutonic Order's leadership were killed or taken prisoner.
East PrussiaEast Prussia (Ostpreußen) was a province of the Kingdom of Prussia from 1773 to 1829 and again from 1878 (with the Kingdom itself being part of the German Empire from 1871); following World War I it formed part of the Weimar Republic's Free State of Prussia, until 1945. Its capital city was Königsberg (present-day Kaliningrad). East Prussia was the main part of the region of Prussia along the southeastern Baltic Coast. The bulk of the ancestral lands of the Baltic Old Prussians were enclosed within East Prussia.
OlsztynOlsztyn (UKˈɒlʃtɪn , ˈɔlʂtɨn; Allenstein ˈʔalənʃtaɪn; Old Prussian: Alnāsteini ) is a city on the Łyna River in northern Poland. It is the capital of the Warmian-Masurian Voivodeship, and is a city with county rights. The population of the city was estimated at 169,793 residents Olsztyn is the largest city in Warmia, and has been the capital of the voivodeship since 1999. In the same year, the University of Warmia and Masuria was founded from the fusion of three other local universities.
Former eastern territories of GermanyThe "former eastern territories of Germany" (Ehemalige deutsche Ostgebiete) refer in present-day Germany to those territories east of the current eastern border of Germany i.e. the Oder–Neisse line which historically had been considered German and which were annexed by Poland and the Soviet Union after World War II in Europe. In many of these territories, Germans used to be the dominant or sole ethnicity.