sentences:  The Jacobites crossed into England on 8 November and reached Carlisle on 10th.Previously an important border fortress, its defences had been neglected since the 1707 Union but it remained a formidable challenge for the Jacobites, who had no siege equipment.They insisted town and castle surrender or neither, threatening to burn both if not; although Jacobite officer O'Sullivan later admitted this was a bluff, Carlisle capitulated on 15 November.