Yorktown, Virginia. De Grasse concurred with Rochambeau and subsequently sent a dispatch indicating that he would reach the Chesapeake at the end of August but that agreements with the Spanish meant he could only stay until mid-October. The arrival of his dispatches prompted the Franco-American army to begin a march for Virginia. De Grasse reached the Chesapeake as planned and his troops were sent to assist Lafayette's army in the blockade of Cornwallis's army. A British fleet sent to confront de Grasse's control of the Chesapeake was defeated by the French on September 5 at the Battle of the Chesapeake and the Newport fleet delivered the French siege train to complete the allied military arrival. The Siege of Yorktown and following surrender by Cornwallis on October 19 were decisive in ending major hostilities in North America. Other battles Other important battles between the French and the British were spaced out around the world, from the West Indies to India. France's navy at first dominated in the West Indies, capturing Dominica, Grenada, Saint Vincent, Tobago but losing St. Lucia at the beginning of the war. After the siege of Yorktown the French returned to the West Indies and were successful in taking St. Kitts (despite a naval defeat), Montserrat as well as Demerara and Essequibo in South America by February 1782. A planned Franco-Spanish invasion of Jamaica was aborted after the decisive Battle of the Saintes in 1782. This put French forces on the defensive in the Caribbean although the French captured the Turks and Caicos Islands at the end of the war. In European waters, France and Spain joined forces with the entry of Spain into the war in 1779. An attempted invasion of Britain was a failure due to a variety of factors. A French invasion of Jersey ended in defeat. French and Spanish forces captured Minorca in February 1782 but the Great Siege of Gibraltar the largest operation of the war from 1779 to 1783, was unsuccessful in either storming the place, or preventing repeated British relief of its garrison. In India, British troops gained control of French outposts in 1778 and 1779, sparking the Kingdom of Mysore, a longtime French ally, to begin the Second Anglo-Mysore War. Allied with the French, the Mysoreans for a time threatened British positions on the east coast. A French fleet commanded by the Bailli de Suffren fought a series of largely