The Blitz was a German bombing campaign against the United Kingdom, in 1940 and 1941, during the Second World War. The term was first used by the British press and originated from the term Blitzkrieg, the German word meaning 'lightning war'.

The Bristol Blitz was the heavy bombing of Bristol, England by the Nazi German Luftwaffe during the Second World War. Due to the presence of Bristol Harbour and the Bristol Aeroplane Company, the city was a target for bombing and was easily found as enemy bombers were able to trace a course up the River Avon from Avonmouth using reflected moonlight on the waters, into the heart of the city. Bristol was the fifth-most heavily-bombed British city of the war.