I've been retired for a few months and started working on touching up some of my miniatures. I started with my 15mm Ancients collection. With the miniatures I own, I can field the following armies: Alexandrian Macedonian, Later Achaemenid Persian, Marian Roman, Pontic, and numerous Successors of Alexander armies.
Alexander's Army. Note Alexander leading his Royal Companion cavalry on his famous white horse Bucephalus (lower left, second group from the bottom, just behind the Agrianian light infantry). I just re-mounted the Companions in wedge formation (their preferred fighting formation) on 40mm bases per the DBMM rules. The Macedonian mobile baggage train is at the rear.
The consideration now is: what rules should I use to fight the battle? I have DBA, DBM, DBMM, Armati 2, Tactica, Field of Glory, and Neil Thomas' "Ancient & Medieval Wargaming" rules.