The moon was within a few hours of the full that night, the highest of the spring-tides was making--in the open sea they were at their full height of 25 feet, an hour before midnight,--and though where he would strike the estuary he might hope for a tide more tardy, Edward had before him as he watched, his only avenue of escape, a great flood that appeared to deny him all access to the further shore. Every effort was made to discover from local knowledge whether any passage existed. The highest rewards were offered, in vain, for in all that countryside a feeling which if not national was at least strongly opposed to the invader, forbade treason, and the near presence of the French King's great force was an active reminder of the punishment that would attend it. Late in this period of suspense a guide was found. A man of the name of Gobin Agache, who had been taken prisoner by the army, was that guide. His was that "invaluable" capture which I mentioned in the last section. He was a peasant of those parts, and a native of Mons-en-Vimieux, through which the army had marched from Acheux to Boismont. He yielded to temptation when all others had refused. He was promised a hundred pieces of gold (say £500 of our money), his own liberty, and that of twenty of his companions. For that price he sold himself, and promised to discover to the King and to his army the only practicable ford across the estuary. Just at the end of the night the host set out and marched during the first hours of the moonlit Wednesday morning along the old road which still leads over the hills that separate Boismont from Saigneville and marked the southern bank of the valley. The marshalling was long; the full ordering of the force, now that it was all gathered together and marching along one narrow way, inexpeditious; and the two miles that separated the head of its column from the neighbouring village were not traversed by its last units, nor was the whole body drawn up at the foot of the hills against the water until the sun of that late August day was beginning to rise, and to show more clearly the great sheet of flood-water and the steep distant bank beyond it.