"Royal Air Force Bomber Command, 1942-1945." Armourers show off bombs for a comparison in size at the bomb dump at Woodhall Spa, Lincolnshire. In the front are 1,000-lb and 500-lb MC bombs, behind them a 2,000-lb HC Mark I, then a 4,000-lb HC Mark III or Mark IV 'Cookie'. Finally, at the rear, is a 12,000-lb HC 'Blockbuster', essentially three 4,000-lb 'Cookies' bolted together with the addition of a six-finned ballistic tail.