 In the winter of 558, the remaining large Kutrigur army led by Zabergan crossed the frozen Danube and divided into three sections; one raided south as far as Thermopylae; while two others the Thracian Chersonesus; and the periphery of Constantinople.In March 559 Zabergan attacked Constantinople; one part of his forces consisted of 7,000 horsemen.The transit of such distances in a short period of time shows that they were mounted warriors, and compared to the Chinialon's army, Zabergan's raiders were already encamped near the banks of the Danube.