During World War II the U.S. Navy produced a remarkable group of swimming warriors often called frogmen.

As volunteers for extra hazardous duty, these men carried out vital pre-invasion assignments in such major offensives as Saipan, Guam, Iwo Jima and Okinawa. They charted the approaches to enemy beaches and destroyed mines and other obstacles that could block the path of American landing craft.

In this book Wyatt Blassingame describes the daring World War II exploits of the Underwater Demolition Teams—the U.S. Navy frogmen.

From the book