Britain''s Anti-Submarine Capability, 1919-1939 is the first unified study of the development of Britain''s anti-submarine capability between the armistice in 1919 and the onset of the second world German submarine attack on Britain''s maritime trade in 1939. Well researched and yet accessibly written, this book challenges the widespread belief that the Royal Navy failed to anticipate the threat of the U-boat in the Second World War.