The English force marched by the sea-shore until it arrived at the river Somme. No great resistance was encountered, but large bodies of the enemy's horse hovered near and cut off all stragglers, and rendered it difficult to obtain food, so that sickness again broke out among the troops. On reaching the Somme Henry followed its left bank up, intending to cross at the ford of La Blanche-Tache, across which Edward the Third had carried his army before fighting at Crecy.
The French, as on the previous occasion, held the ford; but they this time had erected defences on each of the banks, and had strong posts driven into the bed of the river. Still ascending along the river bank the English found every bridge broken and every ford fortified, while a great body of troops marched parallel with them on the right bank of the river. At Pont St. Remy, Ponteau de Mer, and several other points they tried in vain to force a passage. Seven days were spent in these attempts; the troops, suffering terrible hardships, were disheartened at their failure to cross the river, and at finding themselves getting farther and farther from the sea. On the morning of the 19th, however, a ford was discovered which had not been staked. The English vanguard at once made a dash across it, repulsed its defenders on the other bank, and the whole army with its baggage, which was of scanty dimensions, swarmed across the river.
Sir Eustace, with his little force, now reduced to half its number, was, as it happened, in front of the army when the ford was discovered, and, followed by his two esquires and ten mounted men-at-arms, dashed into the river, while the archers, slinging their bows behind them, drew their axes and followed. For a short time there was a desperate conflict, but as reinforcements hurried across, the fight became more even and the French speedily gave way. When the king had crossed he thanked Sir Eustace for his prompt action.
"Had you waited to send back for orders," he said, "the French would have come up in such numbers that the ford would not have been won without heavy loss, whereas by dashing across the moment it was discovered, you took the defenders by surprise and enabled us to get over without the loss of a single man."