Most of the bridges had been destroyed, and those remaining were so strongly fortified that they could not be forced.
The position of the English was now very critical.

On one flank and in front were impassable rivers.

The whole country was in arms against them, and on their rear and flank pressed a hostile army fourfold their strength.

The country was swampy and thinly populated, and flour and provisions were only obtained with great difficulty.

Edward, on finding from the reports of his marshals who had been sent to examine the bridges, that no passage across the river could be found, turned and marched down the river towards the sea, halting for the night at Oisemont.
Here, a great number of peasantry attempted a defence, but were easily defeated and a number of prisoners taken.