Back when I played my first Casse campaign there one day turned up this stack of those pesky proto-Scots to pester my humble abode, so naturally I sallied ASAP. Turned out it was great fun driving the chariots in circles around the bunched-up infantry, counter-clockwise of course so the crews' shields helped absorb their javelins while those lasted. By the time my infantry trudged up the hapless savages had expended all their ammunition (to fairly little gain - those chariots are actually fast enough movers that if you time it right you can partially evade the volley), had suffered a fair bit of attrition from the return fire, and were quite tired from fruitless attempts to catch the noisy machines.

Naturally, once the infantry engaged them I started smashing the chariots into the backs of any suitably preoccupied-looking units which did not exactly help their morale one bit. There was actually more of the blighters than I had infantry so I also had to employ the chief-chariotry to preoccupy any spare ones trying to flank - a simultaneous converging hit-and-run attack by no less than three big columns of chariots from all directions messed them up but good, anti-chariot bonuses or no.