Quote Originally Posted by Musket
If i am getting my butt kicked on Medieval, what i do is firstly, try and engage the enemy as far from the army starting point as possible. Secondly i try and flank my enemy, possibly go around the back and hit them from behind.

If all else fails and my army begins taking a heavy loss, i withdraw my army to a safe distance, rally the troops and make a final stand.
You aren't giving a lot of info. Try to read Frogbeastegg's strategy guide in the guide threads first, it'll provide you with the basics you need to know before you fight your battles.

Engaging the enemy from afar: With what units? Do you get your units back? what's the casaulty/kill ratio? Does this screw up the enemy's formation?

Flanking the enemy: With what units? At what moment do they charge? Can the enemy react? Does manoeuvering them in place screw up the enemy's formation?

Withdrawing your troops: Weren't you placed at the best possible terrain before the actual engagement started? Do you withdraw one-by-one or in one move? Do you rout, withdraw or march your troops? Do you leave sacrificial units to slow down the enemy? Is your last stand on better terrain? When do you start this manoeuvre?

We can help if you answer these questions