The Cardiff Blitz, were the World War II bombings of Cardiff, by the Nazi German Luftwaffe, between July 1940 and March 1944. The worst night of bombings occurred on 2nd January 1941 when 100 German aircraft took part in a 10-hour raid that resulted in165 people being killed and 427 more injured, while nearly 350 homes were destroyed or had to be demolished. Western Cardiff was the worst hit area, particularly Canton and Riverside, where 116 people were killed, 50 of which were killed in one street in Riverside, De Burgh Street.
Cardiff was targeted because Cardiff Docks was one of the biggest coal ports in the world. In total, more than 2,100 bombs fell in the Cardiff district during the four years of bombings, with 355 people killed and 502 injured. The History of Wales