Tactically, the battle was indecisive, but France and Spain both made significant strategic gains as a result. The escaping Franco-Spanish fleet was able to deliver troops and supplies to the Spanish army in Italy, decisively swinging the war there in their favour. The Spanish admiral Juan José Navarro was created "Marquess of Victory" after his conduct of the battle. The battle was followed by a French declaration of war on Britain and Hanover in March. In May the French also declared war on Maria Theresa and invaded the Austrian Netherlands, having abandoned their earlier plan to invade Britain.