 Miracles aid Charlemagne and his men, and the grace of God leads him to victory; mostly ill portents surround Louis, such as an omen in the stars supposedly foretelling his army's defeat at the hands of Count Aizo, and the sudden collapse of a wooden arcade atop him in 817.Such references to striking natural phenomena, strange happenings, and miracles become increasingly common in the annal entries for the 9th century.In addition to astronomical oddities, such as eclipses, the supernatural begins to enter the account, set against almost ritualistic yearly notices of the regular passages of Christmas and Easter.