Here’s a set of classic free wargames rules for ancients from Joseph Morschauser.
Rules: Ancients
Life By The Blade Wargames Rules
Life by The Blade is a set of free wargames rules for ancients warfare.
Last Stand – The First Battle of Thermopylae (480 BC) Rules and Figures
Last Stand – The First Battle of Thermopylae (480 BC) is a set of free wargames rules and figures for the classic last stand of the Spartans against the Persians.
Free Move Timed Move Ancients Rules
Free Move Timed Move is a set of Ancients rules based on the Morschauser Roster System.
Dirty Ancients Rules
Dirty Ancients is a set of simple ancients rules from Craig Cartmell