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.