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.
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.
Battle of TannenbergThe Battle of Tannenberg, also known as the Second Battle of Tannenberg, was fought between Russia and Germany between 23 and 30 August 1914, the first month of World War I. The battle resulted in the almost complete destruction of the Russian Second Army and the suicide of its commanding general, Alexander Samsonov. A series of follow-up battles (First Masurian Lakes) destroyed most of the First Army as well and kept the Russians off balance until the spring of 1915.
MasuriaMasuria (, Masuren, Masurian: Mazurÿ) is a ethnographic and geographic region in northern and northeastern Poland, known for its 2,000 lakes. Masuria occupies much of the Masurian Lake District. Administratively, it is part of the Warmian-Masurian Voivodeship (administrative area/province). Its biggest city, often regarded as its capital, is Ełk (Elk). The region covers a territory of some 10,000 km2 which is inhabited by approximately 500,000 people.
