<prompt> Osterhaus o ile a kgethwa go ba molaodi wa 2nd Missouri Volunteer Infantry ge Ntwa ya Selegae e thoma gomme ngwageng wa pele wa ntwa o ile a thwalwa kua Missouri le Arkansas, moo a ilego a tšea karolo e kgolo Ntweng ya Wilsons Creek le Ntweng ya Pea Ridge. Kua Pea Ridge o ile a laela madira ao a ilego a kopana la mathomo le madira a Confederate ao a bego a gatela pele ka go le letshadi la Union. O ile a hlatlošwa go ba brigadier general ka June 9, 1862. Ka 1863 o ile a etelela pele sehlopha sa madira Ntweng ya Port Gibson  <response>: , moo a ilego a bontšha bokgoni bja gagwe bja go diriša maano a go hlalefetša bahlapetši ba Confederate gore ba se be boemong bjo bobotse. 