[Brian61]

Defense Plan 2 looks good although I'm not sure I'd be bold enough to try double envelopment. The double envelopment spoiling attack should draw the enemy's supporting fire away from your front lines and hopefully break up the attack into smaller, more manageable chunks. The danger is getting cutoff, bogged down, and defeated in detail.

A possible alternative might be to make one of the flanking forces much larger than the other. The smaller would conduct a mobile defense, falling back trading ground for time and hopefully getting enemy arty to fall on their own advance. The larger would try to breakthrough and then either roll up the line or go deep and circle around to do a hammer and anvil against the static defenses. The snow might make this impractical in the south, though the road in the north looks interesting.

Anyhow, I agree with your leanings toward at least a partially mobile defense, especially up against that kind of artillery fire!

Brian