One thing that should be pointed out is that this is how Russia has won wars in the past. It likely happened to other invaders before Napoleon, but that’s the first I can think of. They did it to the Nazi’s as well.

Withdraw troops from a city in the winter, destroy infrastructure, thin out the lines/supply chain, and then start back up in the spring while flanking other groups. Putin and his military most certainly know this.

The only difference is that Ukrainians are very used to the territory, so it likely won’t work this time unless they deploy tactical nukes.