<prompt> Bhala okuqhubekayo kwalesi sigaba - Ekuqhumeni kweMpi Yombango u-Osterhaus waqokwa njengomphathi we-2nd Missouri Volunteer Infantry futhi ngonyaka wokuqala wempi wasebenza eMissouri nase-Arkansas, lapho athatha khona ingxenye ebonakalayo eMpini yaseWilsons Creek naseMpini yasePea Ridge. EPea Ridge wayala amabutho aqala ukuxhumana namabutho ase-Confederate ayeqhubekela phambili ngakwesobunxele se-Union. Wakhushulwa waba yi-brigadier general ngoJuni 9, 1862. Ngo-1863 wayala isigaba eMpini yasePort Gibson  <response>: , lapho akhombisa khona ikhono lokuzihlola ekuxosheni abavikeli be-Confederate endaweni enhle. 