sentences:  Intelligence from captured airmen and documents did not offer an unambiguous picture either.On the night of 8/9 April 1941 Coventry was subject to another large air raid when 230 bombers attacked the city, dropping 315 tons of high explosive and 25,000 incendiaries.In this and another raid two nights later on 10/11 April about 451 people were killed and over 700 seriously injured.