Frogmen First Battles Author:William Schofield, P. J. Carisella The authors recount the history of underwater warfare--a new type of guerrila war developed by the Italian navy toward the end of World War I and completely inplemented during World War II. This type of warfare, conducted by frogmen with special training and prototype equipment, proved fatal to Allied civilian and military ships operating in th... more »e Mediterranean Sea. Single frogmen, or frogmen in teams of two, four or six, sank more vessels than any other traditionally formed military entity. It's main unit was the X Light Flotilla, whose frogmen conquered the Mediterranean and even planned an attack on the city of New York--not completed due to War coming to an end.« less