Heavy bomber version of the bouncing bomb, was used to destroy the Mohne and Eder dams by Lancasters from the specially recruited and trained 617 Squadron, often known as the Dambusters, under Wing Commander Guy Gibson. In March and April 1945, as the war in Europe was ending, Lancasters dropped Grand Slams and Tallboys on U-boat pens and railway viaducts across north Germany. At Bielefeld more than of railway viaduct was destroyed by Grand Slams creating an earthquake effect, which shook the foundations. The Boeing B-29 Superfortress was a development of the Fortress, but a larger design with four Wright R-3350 Duplex-Cyclone
34th Training Wing 34th Training Wing The 34th Training Wing is a wing of the United States Air Force based at the Air Force Academy in Colorado Springs, Colorado. The commander of the 34th Training Wing is "dual-hatted" as the Commandant of Cadets at the Academy. The wing was first activated in 1941 as the 34th Bombardment Group. Following the attack on Pearl Harbor, the group briefly participated in antisubmarine patrols. During most of 1942 and 1943, the group acted as a heavy bomber training unit. In early 1944, the unit began preparations to move overseas. It served with Eighth Air Force in