By night , he sent a messenger to warn Philippicus of the approaching threat .
Nevertheless , Kardarigan attempted to attack Heraclius ' ill - equipped unit , and Heraclius had to escape by moving from ridge to ridge .
By night , Heraclius sent a messenger to warn Philippicus of the approaching threat .
Nevertheless , Kardarigan attempted to attack Heraclius ' ill - equipped unit , and Heraclius had to escape by moving from ridge to ridge .