Originally Posted by Tamur
Slow day at work, so some experimenting...
What I did was set up a single-unit battle, I was defending as the Julii. I give the Carthaginians a single 60-man unit of Cretan Archers, and then set up a single unit of each of the standard Roman legion units and let the archers shoot away at them. When they ran out of arrows, the Archers charged.
Results (kills refers to the number the Carthaginians had at the end of battle):
vs. Triarii -- 46 kills
vs. Principes -- 37 kills
vs. Hastati -- 46 kills
vs. Velites -- 48 kills (and Velites routed before combat)
All these units were 60-man roman units, all ended up routing after the Archers charged.
Of course, standing there getting nailed by arrows isn't a terribly realistic scenario, so I then did a single battle where each unit simply charged (not running the whole way) the Archers and chased them.
The Cretan Archers skirmished for about half a mile, then would turn and fight. They routed in every case. Results:
vs. Triarii -- 14 kills
vs. Principes -- 12 kills
vs. Hastati -- 18 kills
vs. Velites - 25 kills
And I tried two where my Roman unit used terrain (the big rock in the Tutorial map) to lure the Archers into a bad position and then attacked them. The Archers would get NEARLY flanked but then skirmish out onto the plain.
Results:
vs. Triarii -- 13 kills
vs. Hastati -- 12 kills
AND finally, I tried two where I had two full "sets" of vel/hast/prin/tri units, and I surrounded four units of Cretan Archers and smushed them.
This was Tricky! These guys run away like a magnet from the same polarity... they'll squeeze out any opening in your flanking maneuver. I was lucky I had eight units to work with, because I needed all of them to encircle and close in.
SO...
it doesn't seem to make much difference if you use terrain -- these mercenary archers skirmish too dang fast to catch with infantry.
The moral of the story:
1) If you're fighting as the Romans, take care of mercenary archers ASAP or you're in big trouble. If that means chasing them down with a lot slower unit, then do it anyway.
2) If you're fighting as the Romans and you happen to have cavalry, even just light cavalry, reserve them for routing and chasing off Archers.
3) If you have the option/luxury of encircling archer units, do it and happy squishing.