"Royal Air Force Bomber Command, 1942-1945." Still from film shot by the RAF Film Production Unit during the daylight raid on Essen, Germany, by over 1,000 aircraft of all bomber groups. A shower of 'Window' is dropped from an Avro Lancaster as aircraft orbit the cloud-covered target. 4,661 tons of bombs were dropped on sky-markers through the complete cloud cover, resulting in an accurate attack on the already ruined city.