Damn Archers! [DS]

I can't seem to kill archers with anything. Even Knights! Can someone please tell me a unit that'll put an end to those pesky archers?

I use Catapults. Or Cannons. Usually an Army of them. At worst, they wear them down enough that my Knights can finish them off. At best, I can wipe out as many Archers as my Catapults have attacks.