C. Julius Caesar, Gallic War

After the conflict had continued for some time with great violence, Dumnacus drew out his army in such a manner, that the foot should by turns assist the horse. Then the legions, marching in close order, came suddenly in sight of the enemy. At this sight, the barbarian horse were so astonished, and the foot so terrified, that breaking through the line of baggage, they betook themselves to flight with a loud shout, and in great disorder. But our horse, who a little before had vigorously engaged them, while they made resistance, being elated with joy at their victory, raising a shout on every side, poured round them as they ran, and as long as their horses had strength to pursue, or their arms to give a blow, so long did they continue the slaughter of the enemy in that battle, and having killed above twelve thousand men in arms, or such as threw away their arms through fear, they took their whole train of baggage.