
Basically this Gallic army tried to assault my roman army....
so I positioned my army on the other side of the bridge and
placed my barbarian mercenaries to take the brunt, with my
roman troops standing in reserve
The Frenchies never got past the bridge, and lost half their strength,
1,000 men in beginning, 500 men in the end; while my mercenaries
were horribly decimated, the average merc unit starting with 120 men
and ending with 20-30.
My main Roman force never entered combat at all.

Unfortunately, my AI reinforcements led by a family member from
a nearby city charged right into the bridge slaughter, and my family
member leading the charge was slaughterd in the first 1.5 seconds

Oh well, I never liked that guy as a family member

ROMA VICTOR!