Chris Bishop has worked in packaging and book publishing since the early 1980s. Amongst his many projects are the Illustrated History of the Vietnam War and Vietnam Airwar Debrief. He lives in London.

Jim Laurier is a native of New England and lives in New Hampshire. He attended Paier School of Art in Hamden, Connecticut, from 1974-78, and since he graduated with honours, he has been working professionally in the field of Fine Art and Illustration. He has been commissioned to paint for the US Air Force and has aviation paintings on permanent display at the Pentagon.

The Sherman DD (Duplex Drive) tank was a brilliant innovation; the design and development of a tank that could float and even 'swim' in water was controversial. Each tank was enveloped in a waterproofed canvas screen, launched at sea from landing craft and then 'swam' to shore, where the screens were deflated, allowing the tanks to operate as fighting vehicles. This book discusses the Sherman DD's many variants, including the prototype Valentine DD tank and examines the successes and tragic failures on the beaches of Normandy and further into North-West Europe, including the challenge of crossing the River Rhine.