"Ancient Warfare" in Wikipedia

[desert]

In the case that the general's advantage was more slight, he might try to rout the enemy, as fleeing troops are far less organized and easier to kill than their steadfast brethren. This can be accomplished by attacking the weak troops (skirmishers) of the enemy with strong infantry, slaughtering many of them, and thus causing them to rout. Once one unit sees another unit routing, it is much more inclined to flee in the panic. An even greater achievement would be to break the will of the enemy general himself, (or kill him) causing him and his bodyguard to flee, leaving his army with little choice but to follow suit. This tactic attempts to start the domino effect, resulting in the entire opposing force fleeing the field of battle. Once the entire opposing force had been routed, it was not uncommon to use cavalry to destroy as much of the routing force as possible, weakening the enemy further.

Why do I get the feeling that the guy who wrote this plays RTW? :P

http://en.wikipedia.org/wiki/Ancient_warfare