Sons of Liberty - Well, those in Boston anyway. There were similar organizations scattered throughout the Thirteen Colonies in the years leading up to the American Revolutionary War, and, yes, "Sons of Liberty" was a common name ;
Rogers Rangers possibly the most famous of the Ranger units. Its notoriety being created firstly by Rogers' own writings(he was not ashamed to put himself in the lime light) and more recently by the film Northwest Passage in 1940 starring Spencer Tracey.
Nathan Hale was an American soldier and spy for the Continental Army during the Revolutionary War. He volunteered for an intelligence-gathering mission in New York and was captured by the British and executed.
Valley Forge was one of the hardest battles marked in the war. It was in the Winter of The winter was so hard that sometimes soldiers didn't have any shoes or shirts. They camped out at Valley Forge. They survived that winter and moved on.