Designed in 1939 and built by Douglas and Ford Motor Company, the B-24 Liberator was the most expensive, most complicated, and most prolifically produced American bomber of World War II. More than 19,000 Liberators saw service in all theaters of operation. Esteemed aviation author Martin Bowman tells the complete story of the Liberator's design, development, and operational use. Rare archival photographs are sourced from the best collections in the world. The B-24 was a costly and complicated aircraft produced during World War II in the USA. It was produced in greater numbers than any other US bomber. This guide to the aeroplane contains over 200 photographs and discusses its design, development and use.