Barbarian Invasion. Won battle, 100% of enemy dead, about 15% of my troops dead.
Game crashed by the end of it, and I can't be bothered to replay it (cause it'll probably happen again).
When I do auto resolve, I can win, but much of the enemy army survives and escapes to a strategically important city*.
Is there any way to win the battle while killing all of them, as I had done the first time?
Alternatively, is there a command/cheat to destroy all their units?

*in RTW, Auto Resolve always has two possible outcomes - win or defeat. All wins and defeats are always identical, so I can't just save, auto resolve, and load save until I get a desirable result.