city in 1890. After the Nazi Party took power in Germany in 1933, a Gestapo station was established in the city and mass arrests of Nazi opponents were carried out. After the Nazis had closed down Dietrich Bonhoeffer's seminar in Finkenwalde (Zdroje, Szczecin) in 1937, Bonhoeffer chose the town as one of the sites where he illegally continued to educate vicars of the Confessing Church. During the Second World War Köslin was the site of the first school for the "rocket troops" created on orders of Walter Dornberger, the Wehrmacht's head of the V-2 design and development program. The Nazis brought many prisoners of war and forced labourers to the city, mainly Poles, but also Italians and French. The Germans operated several forced labour camps in the city, including a subcamp of the Stalag II-B POW camp. Polish forced labourers constituted up to 10% of the city's population during the war. Germany also operated a prison in the city, with forced labour subcamps in the region. After crushing the Warsaw Uprising, the Germans brought several transports of Poles from Warsaw to the city, mainly women and children. After World War II On 4 March 1945, the city was captured by the Red Army. Under the border changes forced by the Soviet Union in the post-war Potsdam Agreement, Koszalin became part of Poland as part of the so-called Recovered Territories. The city's German population that had not yet fled was expelled to the remainder of post-war Germany in accordance to the Potsdam Agreement. The city was resettled by Poles and Kashubians, many of whom had been expelled from Polish territory annexed by the Soviets. As early as March 1945 a Polish police unit was established, consisting of former forced labourers and prisoners of war, however, the Soviets, still present in the city, plundered local industrial factories in April. From May 1945, life in the destroyed city was being organized, the first post-war schools, shops and service premises were established. In 1946, the first public library was opened, whose director was later Maria Pilecka, the sister of Polish national hero Witold Pilecki. In March 1946, the anti-communist Home Army 5th Wilno Brigade was active in Koszalin. In July 1947, the last units of the Soviet Army left Koszalin, and from that time only Polish troops were stationed in the city. In 1953 a local radio station was founded in Koszalin. Initially, Koszalin