 The Dutch fleet was to join a Portuguese squadron fighting Spain at sea, and De Ruyter was appointed to be its "Schout-bij-nacht" or third in command.Although this expedition had little success, De Ruyter distinguished himself in combat against a Spanish fleet in the inconclusive action on 4 November 1641, off Cape St. Vincent.However, as a result of the loss of two ships and damage to others in this action, and the withdrawal of the Portuguese squadron after the action, the Dutch fleet returned home without completing its mission.