THE chronicles of history record that in most wars some figure, through intrepidity, originality, and brilliancy of action, has raised himself above his fellows and achieved a picturesqueness which is commonly associated only with characters of fiction. In the American Civil War, or the War Between the States, three dashing cavalry leaders - Stuart, Forrest, and Mosby - so captured the public imagination that their exploits took on a glamour, which we associate - as did the writers of the time - with the deeds of the Waverley characters and the heroes of Chivalry. Of the three leaders Colonel John S. Mosby (1833-1916) was, perhaps, the most romantic figure. In the South his dashing exploits made him one of the great heroes of the "Lost Cause. " In the North he was painted as the blackest of redoubtable scoundrels, a fact only to be explained as due to the exasperation caused by a successful enemy against whom all measures were worthless and ineffective. So great became the fame of Mosby's partisan exploits that soldiers of fortune came even from Europe to share his adventures.