Rubuta ci gaba ga wannan sakin layi - Leffert ya kammala karatu daga Jami'ar St. Lawrence a 1863. Bayan kammala karatunsa daga St. Lawrence, Buck ya shiga soja kuma ya yi yaƙi da Sojojin Union a Yaƙin Basasa na Amurka a ƙarƙashin Janar Slocum, yana shiga cikin yaƙe-yaƙe a Antietam, Chancellorsville, Gettysburg, Lookout Mountain
, Mishan Ridge, Peachtree Creek, Resaca da kuma Ringgold Gap.