Rubuta ci gaba ga wannan sakin layi - Ya umurci jirgin ruwa mai kwakwalwa a cikin Arewacin Atlantic Blockading Squadron a 1864 <unk> 1865, da kuma wani ɓangare na Admiral Porter's Squadron a yakin biyu na Fort Fisher a watan Disamba na 1864 da Janairu 1865
Ka yi haƙuri. Daga nan sai aka nada Thatcher a matsayin kwamandan rundunar sojojin Gulf ta Yamma, nan da nan ya fara aiki tare da Janar Canby, kwamandan sojojin yammacin Mississippi, a kama Mobile, Alabama. Bayan wani ɗan gajeren lokaci da bombardment mai karfi, Mutanen Espanya Fort da Fort Blakeley aka kama da Union Army a ranar 9 ga Afrilu, 1865. Tare da mahimman kariya na birnin da aka rasa, sojojin Confederate sun kwashe Mobile a ranar 12 ga Afrilu. Janar Granger da Mai Gudanar da Admiral Thatcher sun bukaci mika wuya a hukumance, kuma an mallaki garin.