UK event #3406 The Independence of India needs a "not at war with Japan" line added to its trigger. I just saw the event fire, creating a neutral India with half the subcontinent occupied by the Emperor's army, which now has nothing standing between it and Persia.
Hmm, it may be an error, but one that is completely possible (if not likely) as a counter-historical narrative. The Congress Party of India, in charge of the colonial Parliment, refused to declare war on Japan, and India did not officially declare war on Japan until the British Governor General did so on the behalf of the British Raj.
Gandhi put forward the position that the people of India should offer nothing more than moral support to the British cause, and was arrested for this, and Chandra Bose amassed an army of 50,000 nationalists to fight on behalf of the Japanese against the British.
Needless to say, these facts, and the events of the post-war period indicate that British control over India was very tenuous, and in the light of this I think it very likely that their might have been a revolt in India, alongside a declaration of neutrality had the British lost control of the border area in Burma and had the Japanese been able to march on Calcutta.
I would amend your suggestion to say that the event should be changed to allow for exactly this to happen, when Britain is at war with Japan,
but at anytime, if the Japanese were to capture Calcutta, and a few more Indian cores.
India, is very badly done in this game frankly, and probably should start the game as a British Puppet.
We have taken up this discussion as a possible future modification to the EIR mod, and we are discussing it here:
India in EIR