In an interview with Biff Byford, he said that the song is inspired by Stuka bombers during World War 2 which had sirens fitted to them to make a terrifying noise. It's actually about the bombing of Poland, the invasion of which by Adolf Hitler on September 1, 1939, led to an ultimatum by British Prime Minister Neville Chamberlain, and when that was not complied with, the two countries were at war.
In an interview with Biff Byford, he said that the song is inspired by Stuka bombers during World War 2 which had sirens fitted to them to make a terrifying noise. It's actually about the bombing of Poland, the invasion of which by Adolf Hitler on September 1, 1939, led to an ultimatum by British Prime Minister Neville Chamberlain, and when that was not complied with, the two countries were at war.