Bath was subject to numerous air raid warnings during the Blitz, the German night bombing offensive against Britain's cities, as raiders flew overhead on their way to nearby Bristol which was bombed severely throughout the period, and several bombs fell on Bath during 1940 and 1941. However, the city remained largely untouched until April 1942 and the start of the Baedeker Blitz, mounted in response to a step-change in the effectiveness of the RAF's bombing offensive in March 1942 which resulted in the destruction of the city of Lübeck.