This morning I started a battle on a 100X100 map. My thoughts were that with the equivalent to 4+ companies, it was a good size. By turn three my leg infantry had moved all of 150 meters through the snow and forest. Doing the math- the battle is 57 turns long, they have at least 4 KILOmeters to walk with small villiages and lots of hills befor they even get close to their objectives, which is in the middle of over 500 meters of confinded city space. I'm thinking I should have bought at least some transport!
I'm also thinking that the next time I have to fight in these conditions, I'm going to shorten the map by a km or two.