These organizations were part of the last desperate defense effort by the Empire of Japan to deter possible landings of Allied forces in the San'yo region of western Honshū and consisted mostly of poorly trained reservists, conscripted students and home guard militia.
These organizations formed the last line of defense by the Empire of Japan against potential Allied landings in the San'yo region of western Honshū, primarily consisting of poorly trained volunteers, students, and local militia.