However, one wonders how Japan could really sustain operations so far from home, with an ever-extending supply chain (viz: Burma Railway) and with the sea lanes under increasing pressure from both US and UK/Commonwealth naval forces. And would they have had the manpower to impose an Army of Occupation on anything as vast as India (or large parts thereof)? By 1943 they were already becoming over-extended, and losing command of the seas post-Midway.