Originally published in 1945 by the Military Intelligence Division, United States War Department. This document addresses the following topics regarding Japanese defense against amphibious operations: tactics and organization; beach obstacles, barricades, and mines; fortifications and airfields; Japanese coast defense guns; dual-purpose, antiaircraft, and machine guns; and detection and communication. Please note these are copies of important historical documents that have been extensively cleaned up by the publisher. While every effort has been made to make these books accessible they sometimes reflect the nature of the age of the originals including the typefaces, print quality and occassional marginalia. These are not poor quality OCR documents with missing pages or tracts illegible text.