I agree with the Swedish Model idea. Everyone saw how well it worked and figured they could do it too, but of course didn't realize just HOW disciplined the Carolean Armies were. I mean, we are talking about guys who march up to the equivalent of spitting distance to unleash hell and then charge.

It's a risky strategy, but works wonders when you know for a fact that your men will hold. Hell, kinda reminds me of the Irish regiments in the American Civil War, except they used buck and ball.

In any event, cannons are great, if your gunners don't suck. Otherwise they are a giant pain that only work on mostly stationary targets.