Rubuta ci gaba don wannan sakin layi - Karɓar kwamishinansa a matsayin laftanar a ranar 31 ga Mayu 1860, ya yi aiki a kan jirgin ruwa mai guba a 1861, kuma a kan jirgin ruwa mai guba na West Gulf Blockading Squadron a 1862 <unk> 1863, ya shiga cikin kama New Orleans, Louisiana, a ƙarshen Afrilu 1862; ganin aikin a harin da kuma wucewa na Forts Jackson da St. Philip, a batir Chalmetto, da kuma halakar da 'yan tawaye da jiragen ruwa a ranar 24 ga Afrilu 1862, da kuma wucewar batir Vicksburg a watan Yuni. Ya kasance a lokacin da rago na Tarayyar Tarayya ya kai farmaki a kan Union Fleet a ranar 15 ga Yuli, 1862, ya karbi kwamishinansa a matsayin kwamandan kwamandan a rana mai zuwa. Sicard ya umurci rundunar soja a lokacin hare-haren biyu a kan Fort Fisher a watan Disamba na 1864 da Janairu na 1865
, kuma ya ga ƙarin aiki a harin bam na Fort Anderson a ranar 11 ga Fabrairu, 1865. Daga nan Sicard ya yi aiki a cikin jirgin ruwa mai tururi a kan Kudancin Atlantic Blockading Squadron har zuwa karshen yakin.