He first made a public name for himself when he accompanied fellow Dutch painter Dirk Maas to Ireland to paint the campaigns of William III. Maas had received a commission from King William to paint the Battle of the Boyne, and, although it is not known if he was also present at the battle, Wyck also painted many scenes from the battle. Throughout the 1690s, he is known to have created at least half a dozen oils of the battle, as well as countless battle pieces, encampments and equestrian portraits of soldiers before battle.