 It commemorates the location on the battlefield of Waterloo where a musket ball hit the shoulder of William II of the Netherlands (the Prince of Orange) and knocked him from his horse during the battle.It is also a memorial of the Battle of Quatre Bras, which had been fought two days earlier, on 16 June 1815.The hill offers a vista of the battlefield, and is the anchor point of the associated museums and taverns in the surrounding Lion's Hamlet (; ).