How did francis Marion help the rev war?

Francis Marion was a patriot soldier who fought against the British using surprise attacks, and was cunning in gaining necessary supplies for his men. As stated in the article attached - Mel Gibson's character in 'The Patriot' was loosely (VERY loosely) based upon this gentleman. His family had land in South Carolina and through his local connections he was able to gather men to continue the fight. He had such a way about him that he reportedly convinced a British soldier to change sides and fight with the patriots. Not through a face to face conversation, but through his actions was this done.