John Singleton Mosby, nicknamed the "Gray Ghost", was a Confederate Army cavalry battalion commander in the American Civil War.  His command, the 43rd Battalion, 1st Virginia Cavalry, known as Mosby's Rangers or Mosby's Raiders, was a partisan ranger unit noted for its lightning quick raids and its ability to elude Union Army pursuers and disappear, blending in with local farmers and townsmen. The area of northern central Virginia in which Mosby operated with impunity was known during the war and ever since as Mosby's Confederacy.  After the war, Mosby worked as an attorney and supported his former enemy's commander, President Ulysses S. Grant, serving as the U.S. consul to Hong Kong and in the U.S. Department of Justice.