Tony Edwards offers this Warhammer Ancients Battles list for a Republican Roman Army in the Punic Wars.
The Othismos blog has a Warhammer Ancients scenario for the battle of Ephesus, fought in 499 BC between the Persians and an allied Greek force.
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.
Here’s a page with some errata and clarifications for Warhammer Ancients’ Alexander The Great book.
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.