After World War I, the German Empire lost its eastern Province of Posen and West Prussia to Poland, partially after uprisings by the Polish population in Greater Poland and Silesia. These areas (Greater Poland and Gdańsk Pomerania) had been taken by Prussia in the Polish Partitions. Further territorial claims of Poland were settled in the East Prussian plebiscite and the Upper Silesia plebiscite. While Germany controlled the territories, more than 154,000 German colonists settled in the region, in addition to at least 378.000 German military and officials which were stationed in Polish territories.