AS THE MAJOR POWERS ENGAGED IN AN ARMS RACE IN THE EARLY YEARS OF THE 20TH CENTURY, THE ADMIRALTY WAS TASKED WITH DEVELOPING THE SUBMARINE. COVERING ALL CLASSES OF SUBMARINE DEVELOPED AND DEPLOYED DURING THE WAR, THIS BOOK INCLUDES EXTENSIVE TECHNICAL DETAIL AND FASCINATING ACCOUNTS OF DARING SUBMARINE RAIDS IN THE BALTIC AND THE DARDANELLES.