During WWII, Liverpool suffered a number of devastating bombings on the city, in fact it was the most bombed city outside of LOndon during the war due to it being a major port at the time.
A photo of Liverpool and the devastation looking from the Queen Victoria Statue down Lord Street, May 1941.
Here is the official account of the Chief Constables Report, showing the time and date of Air Raid, type of bomb, location, and damage.