Station HYPO

Shanghai, China

Pre-World War II United States Naval Communication Intelligence (COMINT) operations were largely conducted by Navy personnel.  However, some 40 USMC officers and enlisted personnel whose contributions have gone relatively unheralded but were no less important were also involved.  Their activities contributed materially to the Navy’s ultimate success against Japanese diplomatic and naval encrypted communications systems, and served as a training ground for those who later founded tactical direct support to Marine forces participating in the amphibious campaigns of World War II.