15. On the 25th of August the British landed at Elk River, in Maryland, and began their march toward Philadelphia. Washington selected the Brandywine as his line of defence. The left wing was stationed at Chad's Ford, while the right, under General Sullivan, was extended up the river. On the 11th of September the British reached the opposite bank and began battle. The Hessians, under Knyphausen, attacked at the ford; but the British, led by Cornwallis and Howe, marched up the Brandywine and crossed above the American right. Sullivan allowed himself to be outflanked. Washington was misled by false information; the right wing was crushed by Cornwallis, and the day was lost. [Sidenote: =The British in Philadelphia.=] 16. During the night the patriots retreated to West Chester. The loss of the Americans amounted to a thousand men; that of the British to five hundred and eighty-four. La Fayette was severely wounded. Count Pulaski so distinguished himself in this engagement that Congress honored him with the rank of brigadier. Washington continued his retreat as far as Germantown. On the 15th of the month he recrossed the Schuylkill and met Howe at Warren's Tavern. But just as the conflict was beginning, a violent tempest swept over the field. The combatants were deluged, their cartridges soaked, and fighting made impossible. Howe succeeded in crossing the Schuylkill, and hastened to Philadelphia. On the 26th of September the city was taken, and the main division of the British army encamped at Germantown. [Sidenote: =Battle of Germantown.=] 17. Congress adjourned, first to Lancaster, and afterward to York, where they held their sessions until the next summer. On the night of the 3d of October Washington attempted to surprise the British at Germantown. But the roads were rough, and the different columns reached the British outpost at irregular intervals. There was much severe fighting, but the British gained possession of a large stone house and could not be dislodged. The tide turned against the patriots, and the day was lost. On the 22d of October, Fort Mercer, on the Delaware, was taken by Hessians, while the British fleet took Fort Mifflin, on Mud Island. General Howe thus obtained control of the Delaware. 18. After the battle of Germantown, Washington took up his headquarters at White Marsh. The patriots began to suffer for food and clothing. On the evening of the 2d of December, Howe held a council of war at the house of Lydia Darrah in Philadelphia. It was decided to surprise Washington in his camp. But Lydia, who overheard the plans of Howe, left the city on pretence of _going to mill_, rode to the American lines, and gave the alarm. When the British approached White Marsh, they found the cannons mounted and the patriots in order of battle. The British general maneuvered for four days, and then marched back to Philadelphia. [Illustration: Valley Forge.] [Sidenote: =Valley Forge.=]