Poland world map. In 1683 under john iii sobieski the king of poland the commonwealths military prowess was re established. Between 1941 and 1945 the german nazis established six extermination camps in german occupied polish territory chelmno belzec sobibor treblinka auschwitz birkenau and majdanek. In 1687 polish armies under john iii sobieski rode to the aid of austrian and german armies in vienna who were fast losing their battle against the invading ottoman army. Poland successfully managed its integration into the european union since joining in 2004 and during the 2008 09 global financial crises it was the only member to experience growth.