Bornholm the migrants did not remain. Bornholm also attracted many famous artists at the beginning of the 20th century, forming a group now known as the Bornholm school of painters. In addition to Oluf Høst, they include Karl Isaksson (1878–1922), from Sweden, and the Danes Edvard Weie (1879–1943), Olaf Rude (1886–1957), Niels Lergaard (1893–1982), and Kræsten Iversen (1886–1955). Bornholm, as a part of Denmark, was captured by Germany on 10 April 1940, and served as a lookout post and listening station during the war, as it was a part of the Eastern Front. The island's perfect central position in the Baltic
Bornholm probably launched from a Heinkel He 111) crashed on Bornholm during a test – the warhead was a dummy made of concrete. This was photographed or sketched by the Danish Naval Officer-in-Charge on Bornholm, Lieutenant Commander Hasager Christiansen. This was the first sign British Intelligence saw of Germany's aspirations to develop flying bombs and rockets which were to become known as V-1 and V-2. Bornholm was heavily bombarded by the Soviet Air Force in May 1945 as it was a part of the Eastern Front. The German garrison commander, German Navy Captain Gerhard von Kamptz (1902–1998), refused to surrender to