Rubuta ci gaba ga wannan sakin layi - A cikin Grant's Vicksburg Campaign, Logan ya umurci sashen na 3 na James B. McPherson na XVII Corps, wanda shine na farko da ya shiga birnin Vicksburg a watan Yuli 1863 bayan kama shi. Bayan haka Logan ya yi aiki a matsayin gwamnan soja na birnin. A watan Nuwambar 1863 ya yi nasara William Tecumseh Sherman a cikin umurnin XV Corps; kuma a yakin Atlanta
(Yuli 22, 1864), bayan mutuwar James B. McPherson a lokacin rana, ya dauki umurnin sojojin Tennessee. Oliver O. Howard ya sauya shi ba da daɗewa ba. Ya koma Illinois don zaben 1864 amma ya koma sojojin bayan haka kuma ya umurci rundunarsa ta XV a Sherman's Carolinas Campaign.