When Colonel William Leonard died in 1901, among his effects was found a lovely jewelry box containing a simple ring carved of cow bone and engraved with his birthdate and the year of his imprisonment in Libby Prison. This humble memento, so carefully preserved, was made for him by his men to mark his 46th birthday when they were all prisoners of war in the notorious Libby Prison in Richmond, Virginia. Also found was his journal, which begins when...