This is an original WWII Imperial Japanese Army manual from 1938 focused on tunnel warfare, mining operations, and bunker construction. Issued by the Ministry of the Army (Rikugunsho) and marked as "examined, " it was a technical engineering guide for combat engineers responsible for building. Defensive tunnels and mine shafts. Fold-out blueprints of tunnel structures. Engineering charts showing load resistance and slope calculations.
Construction techniques for rocky, wet, or unstable soil. Guidelines for excavation, timber supports, ventilation, drainage, and more. Dated September 10, 1938 (Showa 13) - this was used during the early years of the Second Sino-Japanese War, as Japan prepared for long-term warfare on the Asian mainland. It is a rare wartime combat engineering field manual, not intended for civilians. A true collector's item for military historians, bunker researchers, or WWII reenactors. Own a Piece of History.