Japan advanced down the Malayan peninsula, mainly using troops from Siam, but the UK landed troops and pushed them back and annexed Siam with the help from Indian forces. Hong Kong not regularly falling is one of the issues we have with the AI, but not the biggest. It will be looked at but probably after the 0.40 version comes out.
Ah. The lack of pics between 1941 and 1944 was the problem then.
Did Japan ever attack the northern Philippine islands or the Dutch East Indies?