Simplify the following text for a Grade 13 native English-speaking person.
Original: After defeating the Continental Army under Commander-in-Chief General George Washington at the Battle of White Plains , the British army under the command of William Howe looked to capture Fort Washington , the last American stronghold on Manhattan .
Simplified: After winning against the Continental Army ( ruled by George Washington ) , the British army ( ruled by William Howe ) wanted to capture Fort Washington , the last American stronghold in Manhattan .