They had help from above.
They all believed that; would they have persevered if they hadn’t?
Worth reading about.
One reference said "Washington recognized the gallant performance and included the men from Maryland in his rear guard to cover the remarkable evacuation of the American force back to Manhattan on the night of the 29th."
Through the rest of the war Washington included men from this unit in his closest personal guard.
This period included the first big engagements of the American Revolution. It was saved through the immense personal bravery of ordinary Americans serving as militiamen, regular members of Washington's Army, and just plain old pick-up volunteers ~ the people's militia!
Agreed. I recall reading somewhere that a fog of that duration and time of year is a rarity there.