Both parts of the plan having thus failed, the army retreated to Dobbs' ferry, where it was joined by the Count de Rochambeau on the sixth of July.
The thanks of the Commander-in-chief were given to that officer in general orders, for the unremitting zeal with which he had proceeded to form his so long wished for junction with the American army; and he was requested to convey to the officers and soldiers under his command, the grateful sense which the general entertained of the cheerfulness with which they had performed so long and laborious a march at so hot a season.
The utmost exertions were made for the grand enterprise against New York. But as the execution of any plan that could be formed, depended on events which were uncertain, the Commander-in-chief directed his attention to other objects, to be pursued if that which was most desirable should prove unattainable. Should the siege of New York become unadviseable, his views were turned to Virginia, the Carolinas, and Georgia.
Early in August, the apprehension that he should be unable to accomplish his favourite object, began to influence his conduct. Letters from the Marquis de Lafayette announced that a large portion of the troops in Virginia were embarked, and that their destination was believed to be New York. Intelligence from the Count de Grasse.This intelligence induced him to turn his attention more seriously to the south; but, to conceal from Sir Henry Clinton this eventual change of plan, his arrangements were made secretly, and the preparations for acting against New York were continued. A reinforcement from Europe of near three thousand men, induced Sir Henry Clinton to countermand the orders he had given to Lord Cornwallis to detach a part of the army in Virginia to his aid; and also to direct that nobleman to take a strong position on the Chesapeake, from which he might execute the designs meditated against the states lying on that bay, so soon as the storm which threatened the British power for the moment, should blow over. In a few days after the arrival of this reinforcement, the Count de Barras gave General Washington the interesting information, that De Grasse was to have sailed from Cape Francis for the Chesapeake, on the third of August, with from twenty-five to twenty-nine ships of the line, having on board three thousand two hundred soldiers; and that he had made engagements with the officers commanding the land and naval forces of Spain in the West Indies, to return to those seas by the middle of October.
This intelligence manifested the necessity of determining immediately, and positively, on the object against which the combined forces should be directed. The shortness of the time appropriated by De Grasse for his continuance on the American coast, the apparent unwillingness of the naval officers to attempt to force a passage into the harbour of New York, and the failure of the states to comply with the requisitions which had been made on them for men, decided in favour of operations to the south; and Lafayette was requested to make such a disposition of his army as should be best calculated to prevent Lord Cornwallis from saving himself by a sudden march to Charleston.[81]
Conformably to the intelligence communicated by the Count de Barras, the Count de Grasse arrived in the Chesapeake late in August with twenty-eight ships of the line and several frigates. At Cape Henry he found an officer despatched by Lafayette with full intelligence of the situation of the armies in Virginia. Lord Cornwallis had collected his whole force at Yorktown and Gloucester Point, which he was fortifying assiduously; and the Marquis had taken a position on James River.
In consequence of this information, four ships of the line and several frigates were detached to block up the mouth of York River, and convey the land forces brought from the West Indies, under the command of the Marquis de St. Simon, up the James to join Lafayette, who, on receiving this reinforcement, took post at Williamsburg. In the mean time, the fleet lay at anchor just within the capes. On the 25th of August the Count de Barras[82] sailed from Newport for the Chesapeake.
Rodney was apprized of the destination of De Grasse, but seems not to have suspected that the whole fleet would sail for the continent of America. Supposing therefore that a part of his squadron would be sufficient to maintain an equality of naval force in the American seas, he detached Sir Samuel Hood to the continent with only fourteen sail of the line. That officer arrived at Sandy Hook on the twenty-eighth of August.
Admiral Greaves, who had succeeded Arbuthnot in the command of the fleet on the American station, lay in the harbour of New York with seven ships of the line, only five of which were fit for service. On the day that Hood appeared and gave information that De Grasse was probably on the coast, intelligence was also received that De Barras had sailed from Newport.
The ships fit for sea were ordered out of the harbour; and Greaves, with the whole fleet, consisting of nineteen sail of the line, proceeded in quest of the French.