When Philadelphia was evacuated, Lee first tried to throw Washington off on a false scent by alleging reasons for believing that Clinton did not intend to retreat across New Jersey. Failing in this, he found reasons as plentiful as blackberries why the British army should not be followed up and harassed on its retreat. Then when Washington decided that an attack must be made, he grew sulky and refused to conduct it. Washington was marching more rapidly than Clinton, on a line nearly parallel with him, to the northward, so that by the time the British general reached Allentown he found his adversary getting in front of him upon his line of retreat. Clinton had nothing to gain by fighting, if he could possibly avoid it, and accordingly he turned to the right, following the road which ran through Monmouth and Middletown to Sandy Hook. Washington now detached a force of about 5,000 men to advance swiftly and cut off the enemy's rear, while he designed to come up and support the operation with the rest of his army. To Lee, as second in rank, the command of this advanced party properly belonged; but he declined to take it, on the ground that it was sure to be defeated, and Washington entrusted the movement to the youthful Lafayette, of the soundness of whose judgment he had already seen many proofs. But in the course of the night it occurred to Lee, whatever his miserable purpose may have been, that perhaps he might best accomplish it, after all, by taking the field. So he told Washington, next morning, that he had changed his mind, and was anxious to take the command which he had just declined. With extraordinary forbearance Washington granted his request, and arranged the affair with such tact as not to wound the feelings of Lafayette, who thus, unfortunately, lost the direction of the movement. [Sidenote: His plan of attack] On the night of June 27th the left wing of the British army, 8,000 strong, commanded by Lord Cornwallis, encamped near Monmouth Court House, on the road from Allentown. The right wing, of about equal strength, and composed chiefly of Hessians under Knyphausen, lay just beyond the Court House on the road to Middletown. In order of march the right wing took the lead, convoying the immense baggage train. The left wing, following in the rear, was the part exposed to danger, and with it stayed Sir Henry Clinton. The American advance under Lee, 6,000 strong, lay about five miles northeast of the British line, and Washington, with the main body, was only three miles behind. Lee's orders from Washington were positive and explicit. He was to gain the flank of the British left wing and attack it vigorously, until Washington should come up and complete its discomfiture. Lee's force was ample, in quantity and quality, for the task assigned it, and there was fair ground for hope that the flower of the British army might thus be cut off and captured or destroyed. Since the war began there had hardly been such a golden opportunity.