In America, meanwhile, the glow of victory had given way to weariness and lassitude. Rochambeau with his army remained in Virginia. Washington took his forces back to the lines before New York, sparing what men he could to help Greene in the South. Again came a long period of watching and waiting. Washington, knowing the obstinate determination of the British character, urged Congress to keep up the numbers of the army so as to be prepared for any emergency. Sir Guy Carleton now commanded the British at New York and Washington feared that this capable Irishman might soothe the Americans into a false security. He had to speak sharply, for the people seemed indifferent to further effort and Congress was slack and impotent. The outlook for Washington's allies in the war darkened, when in April, 1782, Rodney won his crushing victory and carried De Grasse a prisoner to England. France's ally Spain had been besieging Gibraltar for three years, but in September, 1782, when the great battering-ships specially built for the purpose began a furious bombardment, which was expected to end the siege, the British defenders destroyed every ship, and after that Gibraltar was safe. These events naturally stiffened the backs of the British in negotiating peace. Spain declared that she would never make peace without the surrender of Gibraltar, and she was ready to leave the question of American independence undecided or decided against the colonies if she could only get for herself the terms which she desired. There was a period when France seemed ready to make peace on the basis of dividing the Thirteen States, leaving some of them independent while others should remain under the British King.