During the week the enemy made a greater number of long-range nightbomber sorties than during any other week of the war. On the 19th/20th. approximately 500 aircraft were employed; this is the highest number recorded in operations on any night against this country. Attacks also showed greater concentration, and on the nights of the 14th/15th, 15th/16th and 19/20th heavy attacks were made on Coventry, London and Birmingham respectively; 350 aircraft attacked Coventry, under ideal weather conditions, and 340 were used against Birmingham.

















