The campaign opened on both sides by rapid predatory incursions and bold desultory attacks. At Peekskill, on the North river, about fifty miles above New York, the Americans had formed a post, at which, during the winter, they had collected a considerable quantity of provisions and camp-equipage to supply the stations in the vicinity as occasion might require. The most mountainous part of the district, named the Manor of Courland, was formed into a kind of citadel, replenished with stores, and Peekskill served as a port to it. On the 23d of March (1777), as soon as the river was clear of ice, Howe, who thought Peekskill of more importance than it really was, detached Colonel Bird, with about 500 men, under convoy of a frigate and some armed vessels, against that post. General M'Dougal, who commanded there, had then only about 250 men in the place. He had timely notice of Colonel Bird's approach, and, sensible that his post was untenable, he exerted himself to remove the stores to the strong grounds about two miles and a half in his rear; but before he had made much progress in the work the British appeared, when he set fire to the stores and buildings and retreated. Colonel Bird landed and completed the destruction of the stores which he was unable to remove. On the same day he re-embarked, and returned to New York. On the 8th of April (1777), says Gordon, Congress concluded upon the erection of a monument to the memory of General Warren in the town of Boston, and another to the memory of General Mercer in Fredericksburg, in Virginia, and that the eldest son of General Warren, and the youngest son of General Mercer, be educated from henceforward at the expense of the United States. They conveyed in a few words the highest eulogium on the characters and merits of the deceased. Through inattention, General Warren, who fell on Breed's Hill, had not been properly noted when Congress passed their resolve respecting General Montgomery: the proposal for paying due respect to the memory of Mercer led to the like in regard to Warren. On the 13th of April Lord Cornwallis and General Grant, with about 2,000 men, attempted to surprise and cut off General Lincoln, who, with 500 men, was posted at Bound Brook, seven miles from Brunswick, and nearly succeeded in their enterprise. But by a bold and rapid movement Lincoln, when almost surrounded, forced his way between the British columns and escaped, with the loss of sixty men, his papers, three field pieces, and some baggage.