As OTL with minor exceptions:
1) Start shipping more food sooner in 1945-46
2) American control over primary and secondary history education until 1965, to include total veto powers over textbooks.
3) Emperor to publicly admit to Japanese war crimes and apologize to victims (on Japanese national television and radio).
4) Limited rearmament after 1955, full military alliance and more sizable armed forces after 1960.
That's pretty much it... none of the OTL "avoiding admitting guilt for war crimes" crap.