I would have to say that you should be careful about advancing heavy Russian forces too far into Europe. Drawing Russian ground units away from Russia is a trap I frequently like to set with Germany. It gets really had to resist trading a bunch of advanced territories with Germany because the prospect of Russia making 30+ IPC’s a turn puts dollar signs in the Russian player’s eyes. With the Axis outnumbering Russia by 5 to 1 with air units, trading a lot of territories and ground units with Russia almost always favors the Axis, even if the unit trade is 1 for 1. No matter how much Russia makes, Japan always outproduces them by up to twice as many units and that point will get hammered home when a large number of Russian forces are aimed at Germany and their reinforcements going west dry up instantly because they are desperately trying to hold back the flood of Japanese units coming at them. Japan has a tendence to look benign one turn and the next turn be all over the map, in force, and Russia can quickly get into trouble by being too aggressive toward Germany. Especially if the eastern defensive structure is poorly maintained.
I completely agree. I’ve used this “rope-a-dope” tactic a few times. retreat with germany, attack with japan, and then usually around round 3-4 i counter attack with germany and squeeze russia out and hope that germany conquers russia so i can get the IPC’s. I say thi cause usually the Allies have taken western Europe with this strategy at some point and I have to retake it.