Planning for the attack on Braunschweig was finalized by 15 August 1944. Darmstadt had been attacked on the night of 11 September 1944 using a new targeting technique: a fan-shaped flying formation, and the staggering of the use of explosive and incendiary bombs. Being a largely unprepared town, the resulting fires caused about 11,500 deaths. The Allies then turned their attention to Braunschweig.
