As America braces for a third year of devastating war, British commanders launch campaigns to take Albany and Philadelphia. General Howe beats General Washington at Brandywine and Germantown, while the Continental Congress flees Philadelphia. But the Americans’ surprising victory over General Burgoyne at Saratoga opens the door for France to officially support the United States. The American Revolution, a film by Ken Burns, Sarah Botstein and David Schmidt, continues tonight! | PBS