The King's Swift Rider: A Novel on Robert the Bruce by Mollie Hunter
From where he stood on the hill above the valley, Martin Crawford saw that the leader of the war band was in serious trouble. When a hunting horn sounded from behind, the leader ordered his men to scatter before the onslaught of English soldiers. They were on him in moments, but their numbers broke as they chased the leader's scattered men. In all his sixteen years, Martin had never seen a man fight as this one did, swinging his great sword beside his companions until the last living enemy fled in fear.