BattleLore Master has a number of historical scenarios for the popular game, including Hastings, Lincoln, and Stirling Bridge.
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.