During the day of 14 October 1944, 957 RAF Bomber Command aircraft dropped of high explosive and of incendiaries on Duisburg. Also during the day, USAAF VIII Bomber Command Mission 677 made PFF attacks on Cologne marshaling yards at Gereon, Gremberg, and Eifelter; as well as Euskirchen. A second RAF raid on Duisburg during the night of in two waves about two hours apart dropped a further 4,040 tonnes of high explosive and 500 tonnes of incendiaries. In some cases RAF crews flew both the daylight and night-time raids; a total of nearly eleven hours flying time in During the same night the RAF also bombed Brunswick (), destroying the town centre.