The English then landed, and dividing into three bodies, set out in search of the enemy.
The English columns marched at a short distance apart so as to be able to give each other assistance in case of attack.

The news of the English approach soon reached the Spaniards, who were gathered in a solid body, for the enraged country people, armed with clubs and bills, hung on their flanks and cut off any stragglers who left the main body.

Don Louis at once moved towards the sea-coast, and coming in sight of one of the English divisions, charged it with his whole force.
The English fought desperately, but the odds of seven to one were too great, and they would have been overpowered had not the other two divisions arrived on the spot and fallen upon the enemy's flanks.
After a severe and prolonged struggle the Genoese and Spaniards were completely routed.

The armed peasantry slew every fugitive they could overtake, and of the 7000 men with whom Don Louis commenced the battle only 300 accompanied him in his flight to Rennes, the troops of Sir Walter and de Clisson pursuing him to the very gates of that city.

Sir Walter marched back with his force to the ships, but finding the wind unfavourable returned to Hennebon by land, capturing by the way the castle of Goy la Foret.