"Tony Matthews has written extensively on military and espionage history with more than thirty works to his name. His experience and knowledge are clear to all, manifest in this deeply researched work in which he catalogues in great detail four maritime disasters in WW2."
Martin Willoughby, The Wessex Branch of the Western Front Association

"For, with ample detail on the evolution of a reborn German submarine industry in the 1930s and a scattering of new insights in niche areas, it is a worthy purchase at the retail price of £25."
Duncan Connors, University of Winchester - The Mariner's Mirror, February 2022

As featured in
The Bookseller

If you want to find out anything about every aspect of post war RN submarine design, engineering, weapons, the art of passive sonar detection, and even Cold War scenarios for midget submarine operations, this is the book. The hallmark of any Norman Friedman book is the exhaustive research involved and the high quality of accompanying photos and diagrams. This book is a brilliant example of his craft, in a word, masterly.
Peter Wykeham-Martin, Warship World

If Germany's Great War gamble... is the subtitle of this fascinating piece of military history - only it backfired, and caused President Wilson to declare war on the Germans and turned the tide in favour of the allied forces. Terrific.
Books Monthly