 He had written to King James II from the rendezvous on 6 June 1689 to complain that Purcell's Dragoon Regiment was not well enough equipped to fight effectively.On 29 June von Rosen noted that the Duke of Berwick was using Purcell's dragoons to fortify positions on the River Finn and later in the defence of Omagh.The regiment received a commendation by the Duke of Berwick in action near Enniskillen, in a dispatch to Lieutenant-General Richard Hamilton.