You are the Scippii in 246, poised to take over Italy and expanding the Empire across the Far East, Germany, and Britain.
While Invading Egypt, their last army attacks you with 100+ chariots, a thousand pikemen, and bowmen. You have motley array of Romans and Mercs with crews of onagers and a few cavalry astride your General.
Light reinforcements are on the way, but without your protection, they will be cut down by the Chariots and your remaining men will flee.
I have won and lost this battle - and I know that only the most skilled defense and well timed attack will win this battle. Lure your opponent away, hide in the trees, play dirty - wait for their move and smash their ranks with your artillery until your pincer is in place.