On the night of the 29th March, (1585) with two thousand foot and twelve hundred cavalry, he carried the whole of the old port of Ostend. Leaving a Walloon officer, in whom he had confidence, to guard the position already gained, he went back in person for reinforcements. During his advance, the same ill luck attended his enterprise which had blasted Hohenlo's achievement at Bois-le-Duc. The soldiers he left behind him deserted their posts for the sake of rifling the town. The officer in command, instead of keeping them to their duty, joined in the chase. The citizens roused themselves, attacked their invaders, killed many of them, and put the rest to flight. When La Motte returned; he found the panic general. His whole force, including the fresh soldiers just brought to the rescue, were beside themselves with fear. He killed several with his own hand, but the troops were not to be rallied. His quick triumph was changed into an absolute defeat.