French Admiral the Comte d'Estaing spent the first part of 1779 in the Caribbean, where his fleet and a British fleet monitored each other's movements. He took advantage of conditions to capture Grenada in July before acceding to American requests for support in operations against Savannah. On September 3—an uncharacteristically early arrival as there was still substantial risk of seasonal hurricanes—a few French ships arrived at Charleston with news that d'Estaing was sailing for Georgia with twenty-five ships of the line and 4,000 French troops. Lincoln and the French emissaries agreed on a plan of attack on Savannah, and Lincoln left Charleston with over 2,000 men on September 11.