So I'm playing as England, and my first goal is to (re?)unite the British Isles. I send King William the Conqueror up north from London and declare war on the savage Scots, attacking my first target: a large army led by the heir to the Scottish throne.
It's the dead of winter in some patchy woods, and I decide to be cunning. My cavalry is out in the open, along with a couple of units of spear militia, but the bulk of my forces (including three units of skilled English bowmen) are hidden in the trees.
The Scots charge, of course, the unwashed barbarians that they are, and run straight into the steel rain of arrows that my archers unleash. My cavalry brushes aside their own, the Scot heir is soon killed, and before long the brutes begin to break and flee. My cavalry have a field day hunting them down, and the only reason any Scots survive is because there were simply too many to kill before a few escape off the map.
In the end, my infantry is virtually untouched while my light cavalry took the most losses. We captured over 300 enemy soldiers, all of whom were put to the sword, and now we begin the siege of Edinburgh where the king of Scots awaits with his pitiful home garrison.