He still had his head-quarters at New Windsor, just above the Highlands, and within a few miles of West Point. Here he received intelligence that the enemy were in force on the opposite side of the Hudson, marauding the country on the north side of Croton River, and he ordered a hasty advance of Connecticut troops in that direction. The Croton River flows from east to west across Westchester County, and formed as it were the barrier of the American lines. The advanced posts of Washington's army guarded it, and by its aid, protected the upper country from the incursions of those foraging parties and marauders which had desolated the neutral ground below it. The incursions most to be guarded against were those of Colonel Delancey's loyalists, a horde of tories and refugees which had their stronghold in Morrisania.
The object of their present incursion was to surprise an outpost of the American army stationed near a fordable part of the Croton River, not far from Pine's Bridge. The post was commanded by Colonel Christopher Greene, of Rhode Island, the same who had successfully defended Fort Mercer on the Delaware, when assailed by Count Donop. He was a valuable officer, highly prized by Washington. Colonel Delancey, who led this foray, was successor to the unfortunate André as adjutant-general of the British army. He conducted it secretly, and in the night, at the head of a hundred horse and two hundred foot. The Croton was forded at daybreak, just as the night-guard had been withdrawn, and the farm-houses were surprised and assailed in which the Americans were quartered. That occupied by Colonel Greene and a brother officer, Major Flagg, was first surrounded. The major started from his bed, and discharged his pistols from a window, but was shot through the head, and afterwards despatched by cuts and thrusts of the sabre.
The door of Greene's room was burst open. He defended himself vigorously and effectively with his sword, for he had great strength, but he was overpowered by numbers, cut down, and barbarously mangled. A massacre was going on in other quarters. Besides these two officers, there were between thirty and forty killed and wounded, and several made prisoners. It is said that Colonel Delancey was not present at the carnage, but remained on the south side of the Croton to secure the retreat of his party. Before the troops ordered out by Washington arrived at the post, the marauders had made a precipitate retreat. They had attempted to carry off Greene a prisoner, but he died within three-quarters of a mile of the house. The commander-in-chief, we are told, heard with anguish and indignation the tragical fate of this, his faithful friend and soldier.
At this juncture Washington's attention was called in another direction. A frigate had arrived at Boston, bringing the Count de Barras, to take command of the French naval force. He was a veteran about sixty years of age, and had commanded D'Estaing's vanguard, when he forced the entrance of Newport harbor. The count brought the cheering intelligence, that an armament of twenty ships-of-the-line, with land forces, was to sail, or had sailed, from France, under the Count de Grasse for the West Indies, and that twelve of these ships were to relieve the squadron at Newport, and might be expected on the coast of the United States in July or August.
The Count de Rochambeau, having received despatches from the court of France, now requested an interview with Washington. The latter appointed Weathersfield in Connecticut for the purpose; and met the count there on the 22d of May, hoping to settle a definite plan of the campaign. Both as yet were ignorant of the arrival of Cornwallis in Virginia. The policy of a joint expedition to relieve the Carolinas was discussed. As the French ships in Newport were still blockaded by a superior force, such an expedition would have to be made by land. A march to the Southern States was long and harassing, and always attended with a great waste of life. On the other hand, an effective blow might be struck at New York, the garrison having been reduced one-half by detachments to the South. It was determined, therefore, that the French troops should march from Newport as soon as possible, and form a junction with the American army on the Hudson, and that both should move down to the vicinity of New York to make a combined attack, in which the Count de Grasse should be invited to co-operate with his fleet and a body of land troops.
A vessel was despatched by De Rochambeau, to inform the Count de Grasse of this arrangement; and letters were addressed by Washington to the executive authorities of New Jersey and the New England States, urging them to fill up their battalions and furnish their quotas of provisions. Notwithstanding all his exertions, however, when he mustered his forces at Peekskill, he was mortified to find not more than five thousand effective men. Notwithstanding, too, all the resolutions passed in the legislatures of the various States for supplying the army, it would, at this critical moment, have been destitute of provisions, especially bread, had it not been for the zeal, talents, and activity of Mr. Robert Morris, now a delegate to Congress, from the State of Pennsylvania, and recently appointed superintendent of finance. This patriotic and energetic man, when public means failed, pledged his own credit in transporting military stores and feeding the army.
The Count de Rochambeau and the Duke de Lauzun being arrived with their troops in Connecticut, on their way to join the American army, Washington prepared for spirited operations; quickened by the intelligence that a part of the garrison of New York had been detached to forage the Jerseys. Two objects were contemplated by him: one, the surprisal of the British works at the north end of New York Island; the other the capture or destruction of Delancey's corps of refugees in Morrisania. The attack upon the posts was to be conducted by General Lincoln, with a detachment from the main army, which he was to bring down by water—that on Delancey's corps by the Duke de Lauzun with his legion, aided by Sheldon's dragoons, and a body of Connecticut troops. Both operations were to be carried into effect on the 3d of July. The duke was to march down from Ridgebury in Connecticut, for the purpose. Everything was to be conducted with secrecy and by the way of surprisal. Should anything occur to prevent Lincoln from attempting the works on New York Island, he was to land his men above Spyt den Duivel Creek, march to the high grounds in front of King's Bridge, lie concealed there until the duke's attack on Delancey's corps should be announced by firing or other means; then to dispose of his force in such a manner as to make the enemy think it larger than it really was; thereby deterring troops from coming over the bridge to turn Lauzun's right, while he prevented the escape over the bridge of Delancey's refugees when routed from Morrisania.
In pursuance of the plan, Lincoln left the camp near Peekskill on the 1st, with eight hundred men, and artillery, and proceeded to Teller's Point, where they were embarked in boats with muffled oars, and rowed silently at night down the Tappan Sea. At daylight they kept concealed under the land. The Duke de Lauzun was supposed, at the same time, to be on the way from Connecticut. Washington, at three o'clock on the morning of the 2d, left his tents standing at Peekskill, and commenced his march with his main force, to Valentine's Hill, four miles above King's Bridge. There he posted himself to cover the detached troops, and improve any advantages that might be gained them.
Lincoln, on the morning of the 2d, had left his flotilla concealed under the eastern shore, and crossed to Fort Lee to reconnoitre Fort Washington from the cliffs on the opposite side of the Hudson. To his surprise and chagrin, he discovered a British force encamped on the north end of New York Island, and a ship-of-war anchored in the river. In fact, the troops which had been detached into the Jerseys, had returned, and the enemy were on the alert; the surprisal of the forts, therefore, was out of the question. His thoughts now were to aid the Duke de Lauzun's part of the scheme, as he had been instructed. Before daylight on the 3d, he landed his troops above Spyt den Duivel Creek, and took possession of the high ground on the north of Harlem River, where Fort Independence once stood. Here he was discovered by a foraging party of the enemy, fifteen hundred strong, who had sallied out at daybreak to scour the country. An irregular skirmish ensued. The firing was heard by the Duke de Lauzun, who was just arrived with his troops at Eastchester, fatigued by a long and forced march in sultry weather. Finding the country alarmed, and all hope of surprising Delancey's corps at an end, he hastened to the support of Lincoln. Washington also advanced with his troops from Valentine's Hill. The British, perceiving their danger, retreated to their boats on the east side of Harlem River, and crossed over to New York Island. A trifling loss in killed and wounded had been sustained on each side, and Lincoln had made a few prisoners.
Being disappointed in both objects, Washington did not care to fatigue his troops any more, but suffered them to remain on their arms, and spent a good part of the day reconnoitring the enemy's works. In the afternoon he retired to Valentine's Hill, and the next day marched to Dobbs' Ferry, where he was joined by the Count de Rochambeau on the 6th July. The two armies now encamped—the American in two lines, resting on the Hudson at Dobbs' Ferry, where it was covered by batteries, and extending eastward toward the Neperan or Sawmill River; the French in a single line on the hills further east, reaching to the Bronx River.