The great Sun Tzu says: There are five ways to attack with fire.

1: Burn the enemy troops.
2:Burn the enemy supplies.
3:Burn the enemy supply convoys.
4:Burn the enemy base.
5:Burn the enemy cities.

This is a quote from The Art of War.

So I think it should be employed into the game that archers could attack with fire arrows.

sjak´.

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"-Know your self, know your enemy and your victory will be painless.
-Know the weather, know the terrain and your victory will be complete."
-Sun Tzu(Wu), The Art of War.