1821 biography of Francis Marion, the lieutenant colonel in the Continental Army and later Brigadier General in the South Carolina Militia during the American Revolutionary War. He became known as the "Swamp Fox" for his ability to use decoy and ambush tactics to disrupt enemy communications, capture supplies, and free prisoners. His incorporation of guerilla tactics helped set the motions for later combat events in which fighting in open battlefields would decline in use. His occupation before the Revolutionary War was as a sailor. Marion is considered one of the fathers of modern guerilla warfare, and is credited in the lineage of the United States Army Rangers.