Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Underwater warfare at its best!

A very interesting book showing the exploits of the originators of modern underwater warfare: the Italian frogmen! This book will take you to each mission (in WW II) like you were there. Spine chilling details of almost fanatical dedication to triumph over any challenge! Highly recommended to anyone interested in historical diving and underwater warfare. In the minus side, the book could be improved with more and better photographs of the gear and equipment used by these early underwater wariors.