 Complete the following phrase:  The bombing of Wieluń was an air raid on the Polish town of Wieluń by the Luftwaffe on 1 September 1939. The Luftwaffe started bombing Wieluń at 04:40, five minutes before the shelling of Westerplatte, which has traditionally been considered the beginning of World War II in Europe. The air raid on the town was one of the first aerial bombings of the war. About 1,300 civilians were killed, hundreds were injured, and 90 percent of the town centre was destroyed. The casualty rate was more than twice as high as 