Lieutenant-Admiral Michiel de Ruyter virtually controlled the seas around the south coast of England after a battle that took place in what year ?
Raid on the Medway The Raid on the Medway during the Second Anglo-Dutch War in June 1667, sometimes called the Battle of the Medway, Raid on Chatham or the Battle of Chatham, was a successful and daring attack conducted by the Dutch navy deep upriver targeting the largest English naval battleships at a time when most were virtually unmanned and unarmed, laid up due to lack of funding in the fleet anchorages off Chatham Dockyard and Gillingham in the county of Kent. At the time, the fortress of Upnor Castle and a barrier chain called the "Gillingham Line" were supposed to protect the mothballed naval ships anchored off Chatham, the main English naval base in southeastern Stuart England.
Invasion of Isle de France The Invasion of Isle de France was a complicated but successful amphibious operation in the Indian Ocean, launched in November 1810 during the Napoleonic Wars. During the operation, a substantial British military force was landed by the Royal Navy at Grand Baie on Isle de France (now Mauritius). Marching inland against weak French opposition, the British force was able to overwhelm the defenders in a series of minor engagements, culminating in the capture of the island's capital Port Napoleon and the surrender of Charles Decaen, the French governor. The surrender eliminated the last French territory in the Indian Ocean and among the military equipment captured were five French Navy frigates and 209 heavy cannon. Isle de France was retained by Britain at the end of the war under the name of Mauritius and remained part of the British Empire until 1968.