Jeff Jonas has an article on using war machines in Warhammer Ancient Battles. There are some nice pictures of painted Roman war machine models, and a good discussion of their use by the legions.
Warhammer
Sepeia 494 BC Warhammer Ancients Scenario
The Othismos ancients wargaming blog has a Warhammer Ancients scenario for the battle of Sepeia, fought in 494 BC between the Spartans and Argives.
Late Medieval Bosnian Armies For Warhammer
Here’s an article on Late Medieval Bosnian Armies for Warhammer Ancient Battles.
Inquisitor Rules 40k Universe
Inquisitor was game produced by Games Workshop set in the Warhammer 40K Universe. Curiously, it used 54mm figures.
The game is out of print, but a rules archive is at the link.