Oi, Van Merlen's brigade was engaged at Quatre-bras too! (And defeated). And at Waterloo it supported the retreat of the British cav, catched some cannonballs, charged some cuirassiers, catched some cannonballs and then ceased to exist.
No, not due to catching cannonballs. Van Merlen got shot and killed, leaving the Brigade in command to Boreel who was Dutch (Oh, and incompetenent), so De Merxs (Or whatever his name was) of the 5th Light dragoons refused to follow his orders and went on his merry way to join up with Ghighy. Boreel was left with 300 of his hussars and joined up with Chassé. They supported and protected the horse artillery, but there's no report of a charge - even due a few men recieved bayonetwounds. We'll never know, I guess.
ORANJE BOVEN! VIVE LE ROI!