William returned to England to release his army from service in 1073 but quickly returned to Normandy, where he spent all of 1074. He left England in the hands of his supporters, including Richard fitzGilbert and William de Warenne, as well as Lanfranc. William's ability to leave England for an entire year was a sign that he felt that his control of the kingdom was secure. While William was in Normandy, Edgar the Ætheling returned to Scotland from Flanders. The French king, seeking a focus for those opposed to William's power, then proposed that Edgar be given the castle of Montreuil-sur-Mer on the Channel, which would have given Edgar a strategic advantage against William. Edgar was forced to submit to William shortly thereafter, however, and he returned to William's court. Philip, although thwarted in this attempt, turned his attentions to Brittany, leading to a revolt in 1075.