These unexpected obstacles having defeated the design upon the works, he proceeded to execute his eventual orders of co-operation with the Duke de Lauzun.

These were, after landing above Spiken Devil Creek, to march to the high ground in front of Kingsbridge, and there conceal his detachment, until the attack on Delaney's corps should commence.
The Duke de Lauzun did not arrive, and the return of day betrayed Lincoln.

A British corps advanced upon him; on hearing which, General Washington put his troops in motion, and, on his approach, the British troops retired into the island.
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.
[Sidenote: Intelligence from the Count de Grasse.] 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.