Dangerous locations and magical fog.

1) A city should provide partial protection. Because there is a difference between an army that struggles through difficult conditions, losing soldiers along the way, and a city where everyone is stationed in the garrison, in the barracks, and can stay there for a long time. 2) And let there be no auto-battle. 3) It will be possible to pass through everywhere, but if the place is very bad, then you can lose half of your army. Although you can go through such places with a small army, but if there are 20 dragons there, it won't work. This can be implemented in a map for Heroes of Might and Magic V using map editor scripts.