The AI in Sid Meier's Antietam is generally pretty good, but yesterday I played a battle that made me wince.
This scenario has a very short time limit, so I kept my troops to Manuever column and ordered them to hustle for the hill. For some reason the enemy decided move most of their troops down the hill to attempt to stop me at the bridge, but it didn't quite work.
The enemy commander spent the entire game fighting that one regiment while my brigade took the hill, routed his defenders there, slaughtered the artillerymen, and then poured fire on him FROM THE HILL.
I've never had an easier victory.
A somewhat more interesting altercation:
Both sides made mistakes in the opening plays. The rebels should have engaged me immediately, ensuring that I never went NEAR the Roulette Farm. If they could keep my main body of men engaged in the south, that forward brigade would be trapped behind enemy lines. For my own part, I ordered the forward brigade to advance even further, creating a situation where they could have been completely surrounded.
Said situation. That first brigade was my strongest, but because I moved it too far forward two of its regiments were broken early on and it struggled throughout the battle.
Eventually my second and third brigades arrived to fight in the cornfield. I couldn't outflank them because of another body of rebs hidden in the woods, so I relied on superior strength of arms and a series of charges to push the enemy back and compromise their position.
In the south, my and the enemy lines were broken and tangled together.
Eventually, all ended well. I used artillery to maintain a hold over the Hagerstown road, and after weakening the main body of rebel troops I had some to spare to drive out the enemy in the woods, allowing me to turn the rebel flank and rout them. The result was a decisive Union victory.