Mob Battle

[merb]

I searched and found nothing directly related to scripted mob battles, so here goes nothing...

I was wondering if there was a way to make a somewhat large scale fight between mobs. For example, I was thinking of doing a Freeport war type event in which orcs attempt to invade Freeport. Now, my idea was have something set so when the general says a certain line, the orc army begins to advance, as well as the Freeport one. Now, to make them fight, I though I'd just set them on opposite factions, aggressive, social to 1 with a large aggro range, then have them just path towards each other. Before I get into that though, I wanted to check and see if it would work.

Is there an easier/better way to do this? Is it even possible? Thanks in advance!