In the spring of 1942, Japan's leaders faced a dilemma. Their conquest had progressed faster than expected; the problem was what to do next.
Some military leaders suggested that Japan strike the wartorn British Empire in India and the Middle East, then link up with German forces in Southern Russia and North Africa. Take Australia, counseled the Japanese Navy, this was the obvious starting point for an Allied counterattack.
The Army opposed both ideas. Japan's ground troops were already stretched thin. Either campaign would weaken them even more. In early March, a less grandiose plan was ac…