Battle of the Elephants
We recently decided to run a large Ancients game using our 6mm figures. Galatian against Selucid, using the IMPETUS wargames rules.
Impetus V2.0 from Dadi & Piombo Publishing
The 2 sides faced off against each other on an open map with sparse vegitation. We used a River down the right to anchor the battle area and deployed equal distances from the centre and sides.
See the images below for the forces involved.