The militia of the lower counties of Delaware, commanded by General Rodney, were directed also to assemble in the British rear, and to co-operate with those of Maryland.

Colonel Richardson's continental regiment, which had been stationed on the Eastern shore, was ordered to join this corps.
The militia of Pennsylvania, commanded by Major General Armstrong, were united with the main body of the army.

Great exertions were used to bring them promptly into the field, and they came forward generally with some degree of alacrity.

Although the numbers required by congress did not assemble, more appeared than could be armed.
The real strength of the American army can not be accurately stated.
It was estimated by Sir William Howe at fifteen thousand, including militia; and this estimate did not far exceed their real total, as exhibited by the returns.

But it is a fact, attributable in some degree to the badness of their clothing, and scarcity of tents, and in some degree to the neglect of the commissary department, to provide those articles of food which contribute to the preservation of health, that the effective force was always far below the total number.