I use this strategy every time I play Russia. In additon I build Mech Inf. in Calcutta so as to link up with Chinese and Russian forces as quick as possible.
How was Russia able to advance that far? It shouldn’t be possible without direct America help. The moment that Russia moves beyond poland in Global you can call the game right there.
I dont think that I fully understand your question about Russia. They have only moved into Finland. The axis did surrender after six rounds however.