June
The Continental Congress resolved that the United States flag would bear thirteen stripes and thirteen white stars on a blue field.
See separate 1777 flag resolution entry.
October
General John Burgoyne surrendered his entire army of nearly 6,000 men to American forces, the turning point that persuaded France to enter the war.
December
France's Foreign Minister informed American commissioners in Paris that King Louis XVI would recognize the United States, a turning point after Saratoga.
The Continental Congress designates a national day of thanksgiving to celebrate the American victory at Saratoga, the first such proclamation by the united colonies.
George Washington's Continental Army began establishing winter quarters at Valley Forge, Pennsylvania, facing brutal cold and severe shortages.