In the Department of the West under Maj. Gen. John C. Frémont, Pope assumed command of the District of North and Central Missouri in July, with operational control along a portion of the Mississippi River.
I det vestlige militærdepartement ved generalmajor John C. Frémont, overtog Pope i juli kommandoen over det nordlige og centrale Missouri, med operationel kontrol over en del af Mississippifloden.