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
Wing Commander (horse) kept for a total of six years. In total he won 6 Five-Gaited World Grand Championships, and was the first of only two horses to accomplish this. In 1950 "Life" magazine featured Wing Commander as an example of a fine athlete and an American Idol. He was owned by Dodge Stables, and trained and ridden by Earl Teater. Wing Commander stood at stud at Castleton Farm in Lexington, Kentucky, and died at the age of 29. Wing Commander was foaled in 1943. He was a chestnut stallion with four white socks and a white star on his forehead. He was