Ia tusi se faaauauga o lenei palakalafa - Na savavali atu le vaega lona 7 o le ʻautau tiʻetiʻe solofanua a Misuri i Flat Creek iā Fepuari 1863. Ona la siitia atu lea i Rolla i Missouri. Na auai le iunite i gaoioiga faasaga i le osofaʻiga a Marmaduke i Cape Girardeau mai le 17 Aperila i le 2 Me. Na tofia le vaega lea i le nofoaga o le Pilot Knob seʻia oo iā Iulai. O le iunite na tofia i le 1st Brigade, 1st Cavalry Division, Itumalo o Sautesasae Misuri, Matagaluega o Misuri ia Iulai-Aokuso ma sa i Brownsville, Arkansas ia Iulai 25. Na tofia le regiment i le 1st Brigade, 1st Cavalry Division, Arkansas Expedition, mai ia Setema 1863 ia Ianuari 1864. I le taimi o le malaga a Frederick Steele i Little Rock, Arkansas, o le 7th Missouri Cavalry o se vaega o le Lewis Merrill's 1st Brigade i le John Wynn Davidson's 1st Cavalry Division. O isi vaega o le vaega, o le 2nd Missouri ma le 8th Missouri Cavalry Regiments. Sa iai ni fetauaʻiga i Grand Prairie iā Aokuso 17, Brownsville iā Aokuso 25, ma Ashley's Mills iā Setema 7. O le taua i Bayou Fourche na avea ma vaega autū o le faigāmalaga
I le aso 10 o Setema 1863, na siitia ai e Steele lana vaega o fitafita i le itu i mātū o le vaitafe o Arkansas, a o le vaega a Davidson e 6,000 fitafita tiʻetiʻe solofanua na sopoʻia atu i le itu i saute o le vaitafe. O le vaega a John Montgomery Glover i le itu taumatau ma le vaega a Merrill i le itu tauagavale, na tuliesea ai e tagata tiʻetiʻe solofanua a Davidson le ʻautau a Marmaduke ma faamalosia ai le ʻautau a le Confederate a Sterling Price e ō ese mai i Little Rock.