For some reason, the Finns have never taken complete advantage of our weakness in dealing with the Fascist invaders.  They did advance, but only back to the border we had before our Winter War with them.

Still, now we need to secure our border once again.  We have the extra resources, and I want you to take charge.  

Send your troops up to capture the city of Viipuri, and then move north west to take the rail line leading into the heart of Finland toward Helsinki.

Make good use of the new IS-2s.  Use your reconnaisance and artillery to soften up the Finns before rushing headlong into their lines.  I understand that they will generally give you very little trouble, but our intelligence tells us that they have massed artillery around Viipuri itself.

And keep using available Tu-2s against artillery whenever possible.  The Tupolevs make much better strike aircraft than the other aircraft you have.  And the new Yak-9s are excellent at tearing up columns of tanks.