I only play 42.2 online and i do pay the Harry Larris 3.0 mod.
84%
Anyway. The Hinge is Caucasus for Russia. You cant lose it and controlling it means you influence UKR, KAR, and West Russia.
Build a tank almost each turn depending on spending all IPC and needs. Don’t buy fighters unless Germany is toast. Don’t buy any navy either or bombers.
Strafe the money pit zones of primary groups of German tanks that have little fodder. Don’t lose your fighters ( most important units you got)
You and the Allies need to be a master of a thousand cuts, forcing Germany to waste her tanks putting out fires every turn. This stops a massed attack against Caucasus.
AS UK clear the subs build 1 CV and 2 DD, then build too 4 transports where you shuck 8 land units in France, along with USA
In a far east i recommend bringing all but 3 inf to Moscow. Dont send armies to fight in China. It never works
USA must fight both sides balanced about 60/40 against Germany and gradually increasing to 80% of war potential over 4-6 turns. Force Japan to buy fleet units and fight you, but buy lots of subs which are the “infantry of the seas” and the basic naval unit