Evesham stands on the north bank of the Avon, at the bottom of a loop some two miles deep and one wide. In the thirteenth century the banks were marshy, and there was no bridge for a long distance, except one at Evesham leading to the hamlet of Bengeworth on the east of the loop. Over the high ground known as Green Hill, rising above the town and filling the north part of the loop, ran the direct road from Worcester, crossing the Avon by a ford[12] at Offenham, two miles above Evesham. By this road prince Edward set part of his forces, including probably all his foot-soldiers, to march in the night of August 3, in pursuit of Leicester, entrusting the command to his new supporter the earl of Gloucester. He himself started with a large body of horsemen on the north road, so that his purpose might not be detected, then cutting across country to the eastward reached the ford on the Avon at Prior's Cleeve, some miles above Evesham, early on the 4th. As the road from Evesham to Kenilworth passes near Prior's Cleeve on the left bank, he hoped thus to intercept the earl in front, while Gloucester pressed on his rear. Finding that there was no sign of Montfort's approach, he descended the left bank as far as Offenham: thence he despatched Roger Mortimer with a detachment to hold the bridge at Bengeworth and prevent the earl escaping that way, and himself recrossed the Avon and occupied Green Hill.[13]
When troops were first seen from Evesham on the slopes above, it was supposed that they were young Montfort's army come to join his father: for among the banners that waved over the prince's ranks were those captured at Kenilworth. "It is my son," said the old earl, "nevertheless go up and look, lest we be deceived." The earl's barber, Nicholas, ascended the bell-tower of the abbey, and soon detected the banners of the prince and his supporters, and presently saw Gloucester's forces come up the western side of the hill from the road along the Avon. The earl went up to see for himself, but he knew that he was ruined: the only road of escape for his army must by this time have been almost barred by Mortimer, and his men were not even formed for march. Individuals might yet escape by swimming the Avon, or dashing across the bridge before Mortimer arrived, but for the main body the only way lay through the hostile army, outnumbering his by three or four to one. "God have mercy on our souls," he exclaimed, "for our bodies are the enemy's." The rest of the story cannot be told better than in Professor Prothero's words.
