The Othismos ancient wargaming blog has a Warhammer Ancients scenario for the battle of Tanagra from 457 BC, in which the Spartans faced the Athenians.
Battle for the Shrine is a Heroscape scenario in which players must race for a position and hold it for three turns.
Kenzer and Company have created a series of scenarios for Heroscape based on the Knights of the Dinner Table’s Meat Grinder. I will confess to not following all of the “in jokes” in these scenarios.
This one is for a friend of mine who has been talking for years about wanting to do a game of the Battle of Oriskany from the American Revolution. The Danish wargaming site Krigsspil has a scenario for the battle of Oriskany, which was a brutal one, involving indians and militia.