Kammala jumla mai zuwa: Greer ya ci gaba da zama kwamandan kwamandan kuma ya yi aiki a kan jirgin daga 1862 zuwa 1863, sa'an nan kuma aka haɗa shi da Admiral David Dixon Porter na Mississippi Squadron. Yayin da yake umurni da ironclads, ya shiga cikin yakin Vicksburg da kuma harin da aka yi a
Grand Gulf da kuma aikin da aka yi na Red River na Union a farkon 1864.