The RAF's four-engine Halifax bomber flew on most of the main raids over Germany in the Second World War, as well as in operations from Italy, in North Africa and the Far East, and after the war on the Berlin Air Lift. Jonathan Falconer reviews the design and operation of the Halifax and offers a detailed close-up look at its construction. Fascinating insights into the recovery and restoration of Halifax airframes include the RAF Museum's Mk II (W1048) and the superb A Mk VII (NA337) in the National Air Force Museum of Canada.