The remnant of Little Crow's followers were supposed to be rendezvoused at Devil's lake, in Dakota Territory, and reinforced by a large body of the Upper Sioux. An expedition against them was devised by General Pope, to be commanded by General Sibley. It was to assemble at a point near the mouth of the Redwood river, some twenty-five miles above Fort Ridgely. On the 7th of June, 1863, General Sibley arrived at the point of departure, which was named Camp Pope, in honor of the commanding general. The force composing the expedition was as follows: One company of pioneers, under Captain Chase; ten companies of the Sixth Regiment, under Colonel Crooks; eight companies of the Tenth Regiment, under Colonel Baker; nine companies of the Seventh, under Lieutenant Colonel Marshall; eight pieces of artillery, under Captain Jones; nine companies of Minnesota Mounted Rangers, under Colonel McPhail; seventy-five Indian scouts under Major Brown, George McLeod and Major Dooley; in all 3,052 infantry, 800 cavalry and 148 artillerymen. The command, from the nature of the country it had to traverse, was compelled to depend upon its own supply train, which was composed of 225 six-mule wagons. The staff was complete, consisting of Adjutant General Olin, Brigade Commissary Forbes, Assistant Commissary and Ordnance Officer Atchison, Commissary Clerk Spencer, Quartermaster Corning, Assistant Quartermaster Kimball, Aides-de-camp Lieutenants Pope, Beever, Hawthorne and A. St. Clair Flandrau, Chaplain, Rev. S. R. Riggs.