Fast cavalry (sometimes called light cavalry) are riders of exceptional prowess, trained in lightning-fast manoeuvres and flank attacks. They are more lightly armed and armoured than knights, but make up for this with their flexibility. In battle, they act as scouts and outriders for the army, as well as harrying the flanks of enemy formations with missile weapons.

If a unit is fast cavalry, this is indicated in their entry in the relevant Army book. Fast cavalry units use regular formations and follow all the rules for normal cavalry units, except for the differences described in this section.