Never roll for Russia or Germany.
Roll for Japan and the US. Rarely roll for UK unless her income is extraordinarily high, or defeat is certain unless the Holy Heavy Bombers appear :smile:
Once Japan hits 40 or so, a decision needs to be made. Is a conventional win possible? If not, start rolling with all funds above 30. 10 Inf and a 2/3 rolls per round is good. The key is knowing when to roll. You need to figure this out at least 3-4 turns before Germany falls. If things are grim then tech hard, 6 dice per round. Alternatively, a number of players will buy bombers with any cash above 30 until they have 3-4 bombers and then tech hard with 6 dice per round. This allows for the potential immediate LR HB game turner….because you already have the bombers on the board.
The decision for the US should include consideration on whether any Jap mainland ICs exist. If not, you are likely better off with the schuck-schuck of more infantry/armour. In any case, US teching is more often in response to successful Jap tech than anything else. Never tech with the Allies in the first few turns. You need the naval infrastructure first.
Hope that helps.
SUD