While most accounts put the start of World War 2 on September 1, 1939, many historians claim the conflict actually began on July 7, 1937, when the Japanese Empire invaded China.

Deep in enemy waters, a single American submarine hunted its target: Japan’s most critical warship. What happened next shocked both navies and changed the course of the Pacific War.

And without the contribution of Empire and Commonwealth countries, final victory against Germany and Japan might never have been possible ...