I have noticed that heavily injured soldiers can walk through other soldiers still waiting for a fight. Soldiers that have conquered a building, but that have gotten no place in it (or the building has burnt down), won't walk through soldiers when retreating. This (attacking vs. retreating soldiers) causes the deadlock described. A solution would therefore be to allow these soldiers to walk through their comrades.
I have noticed that heavily injured soldiers can walk through other soldiers still waiting for a fight. Soldiers that have conquered a building, but that have gotten no place in it (or the building has burnt down), won't walk through soldiers when retreating. This (attacking vs. retreating soldiers) causes the deadlock described. A solution would therefore be to allow these soldiers to walk through their comrades.