SynopsisDuring World War 2 it became clear to the Navy that a group of covert raiders would need to be trained to clear the way for amphibious landings in both Europe and the Pacific. With not much more than swim shorts, mask, fins and explosives these commandos were sent in advance of major landings to clear underwater obstacles and booby traps. These soldiers needed special combat training in order to fight effectively against enemy guards or sentries. Chapters detail numerous defensive and offensive techniques, in a step-by-step manner.