Comment 2 for bug 730070

It seems as if it does not have to be a narrow space.
I guess this one is related:
I had a mass fight (40+soldiers from each side) partly in mountain terrain.
All went fine, except one pair.
The enemy soldier was in walking animation, but could not pass my soldier, who in turn
kept hitting at him without any effect. Others were standing guard.
I ignored it for a good while, and then used the spot where they were fighting
for building a sentry.
That warped them from the location and they started and finished a regular fight.