The intention to make this movement being disclosed by the preparatory arrangements, General Washington advised Maxwell to post a choice body of men in the night on an advantageous part of the road, in order to annoy him on his march.

In the morning of the third of September, the two divisions under Lord Cornwallis and General Knyphausen, moved forward and formed a junction at Pencader, or Atkins' tavern, where they encamped.

In their way, the column led by Lord Cornwallis fell in with and attacked Maxwell, who retreated over White Clay creek, with the loss of about forty killed and wounded.
{September 5.} The whole American army, except the light infantry, took a position behind Red Clay creek, on the road leading from the camp of Sir William Howe to Philadelphia.

On this ground, the General thought it probable that the fate of Philadelphia, and of the campaign, might be decided; and he resorted to all the means in his power to encourage his troops, and stimulate them to the greatest exertions.
{September 8.} On the 8th of September, the British army was again put in motion.

The main body advanced by Newark, upon the right of the Americans, and encamped within four miles of that place, extending its left still farther up the country.