During WWII, German E-Boats were so active in the English Channel that the narrow stretch of water became known as 'E-Boat Alley'. To counter the threat of these E-Boats, Britain brought its coastal forces to bear - flotillas of small Motor Torpedo and Gun Boats (MTBs and MGBs) and Motor Launches (MLs). <br><br>As the Germans sought to maintain their supremacy in Channel waters, they continued to develop their E-Boat designs to accommodate more armor and more firepower. Rather than matching the newer E-Boats for armament, the British developed several types to fulfill the varied roles for which the Kriegsmarine were attempting to use the E-Boat. <br><br>This book details this developing conflict, examining the evolution of the boats involved, and covering the their battles from fights in the Thames estuary to the build-up for D-Day.