Asger Garde wrote:
Firstly because it is different from virtually any other wargame i've ever played, secondly because is seems very easy to be surrounded.
It may sound easy, but it really isn't. It's quite a large map and it's fairly rare that any player really wants too many armies operating close together. If the armies are close, then there's an opening or a weakness somewhere (like leaving supply trains exposed). It's rare that more than two armies for one nation are in particularly close proximity.
Do I understand this rule correctly?
You do, but it's not the issue one would think. The nations don't have that many armies to use, and the fronts tend to be too large to make it a useful tactic all that often.