Japanese Army Handbook of Fortifications WWII

This is an authentic WWII-era Fortifications handbook of the Japanese Army.  The book contains a number of illustrations of trenches, bunkers, and fortification layouts. Unfortunately we are unable to translate this manual and cannot provide any additional information regarding its content.

The cover is cloth on paper. All of the pages appear to be present.  There are a few pages marked with red ink, otherwise each page is clean. Measures ~ 4.25 inches by ~3 inches wide and ~3/8 inches thick.