Lets try a new one, man.
Before Marius reforms:
Your in egypt on the east side of the nile, fighting the pharoh's strongest and largest army on the west side of the nile, they are composed of entierly veterans.
You are the romans with 2 legions,50 velites, around 200 cavalry, and a 100 mercenary horse archers from parthia.
The enemy consists of 20,000 spear men, 400 chariots, 100 archers, and 100 camal riders.
Your men ar tired of walking and are ready to bed down for the night when the egyptians attack.
WHAT ARE YOU GOING TO DO!?!?!?!?!?!?!?!?!?!?!?!?!?!?!?