In this book, naval historian Angus Konstam examines the backbone of the Dunkirk evacuation fleet: the warships of the Royal Navy and French Navy that were ordered into action to rescue the British Expeditionary Force. Nearly 50 destroyers, an anti-aircraft cruiser, and more than 200 MTBs, minesweepers, trawlers, and other small warships were involved, as many as could be spared without recklessly endangering naval strength. He highlights the lack of decent anti-aircraft defences available to the Allies in 1940, and shows how improvised weaponry were used to help fend off the Stukas. Dunkirk was the first naval operation of World War II to be carried out under sustained air attack, and nearly a fifth of the destroyers and a quarter of the smaller vessels were sunk, with more badly damaged. Illustrated with archive photos, profiles illustrating the range of both British and French warships involved, and dramatic original artwork, this studies the naval side of the greatest evacuation of World War II.