Draw front, hit execute, wait two years, optionally make hot beverage while waiting.
As you reach the urals and Baku / Azerbaijan, finish said hot beverage.
In a game recently I defeated the Soviet Union as France with grand battle plan and tanks. A country with crappy manpower issues and the wrong doctrine and even Calvary in place of motorized in many instances.
How to defeat Soviet Union?
Build many many lines of 1936 infantry equipment. In 39 build new lines of 1939 infantry equipment. Keep the old lines going.
Like 10 infantry equipment to start. 15 to 20 by 1940.
You need about three or four infantry armies and one or two tank armies.
A tank army is about half tanks and half motorized or infantry.
The tank armies have their own specific battle plan a spearhead along a narrow front through plains.
There are two such pathways on the map. If particularly skilled you can set both panzerns armies to go through the plains and meet in the middle and have a big encirclement.
Air is not important. Navy is not important.
It is simply a numbers game with having a big army and enough equipment for them all to last two years.
Obviously adding an artillery battalion helps with the infantry.
Soviet Union can make a big army but usually isn't skillful enough to equip them.
So simply by having 20 to 30 lines of infantry equipment you will win. More lines of infantry equipment two and three you can get the better.