Well that is an interesting point. I guess I was thinking of an open-field battle, but an assault on a hardened position is probably more common. Actually, th

Well that is an interesting point. I guess I was thinking of an open-field battle, but an assault on a hardened position is probably more common. Actually, that reminds one of WW1 where the western front ended up in stagnation (Verdun) but the eastern front remained more fluid. Perhaps this means that fortresses become even more important.