Washington's opponent in New York was also active. Clinton engaged in a number of amphibious raids against coastal communities from Connecticut to Chesapeake Bay, and probed at Washington's defenses in the Hudson River valley. Coming up the river in force, he captured the key outpost of Stony Point, but advanced no further. When Clinton weakened the garrison there to provide men for raiding expeditions, Washington organized a counterstrike. General Anthony Wayne led a force that, solely using the bayonet, recaptured Stony Point. The Americans chose not to hold the post, but the operation was a boost to American morale and a blow to British morale. American morale was dealt a blow later in the year, when the second major attempt at Franco-American cooperation, an attempt to retake Savannah, failed with heavy casualties.