<prompt> Nyorai kupfuurira kweiyi ndima - Greer akasimudzirwa kuva lieutenant commander uye akashanda muUnited States Navy kubva muna 1862 kusvika muna 1863, uye ipapo akabatanidzwa kuRear Admiral David Dixon Porters Mississippi Squadron. Paaiva mutungamiri wezvikepe zve ironclads uye, akapinda muhondo yeVicksburg nekupfura kweGrand Gulf  <response>: pamwe chete neboka revasina kubudirira reUnion Red River expedition pakuvamba kwa1864. 