This was even truer after the Twelfth Night attack. With his small warband, a fraction of his army at Chippenham, Alfred could not hope to retake the town from the Danes, who had in previous battles (for example at Reading in 871) proved themselves adept at defending fortified positions. So he retreated to the south, preparing himself and his forces for another battle, and then defeated Guthrum and his host. The first we read of Alfred after the disaster at Chippenham is around Easter, when he built a fortress at Athelney. In the seventh week after Easter, or between 4 and 7 May, Alfred called a levy at "Ecgbryhtesstan" (Egbert's Stone). Many of the men in the counties around (Somerset, Wiltshire, and Hampshire) who had not already fled rallied to him there. The next day, Alfred's host moved to Iley Oak, and then the day after that to "Eðandun". There, on an unknown date between 6 and 12 May, they fought the Danes. According to the "Life":