Captain Thrashers company turned to the grim task of gathering the dead and wounded. During the recovery effort, Thrashers men skirmished sporadically with rebels that remained in the vicinity of the mound. The rebels also set fire to the prairie at this time, using the cover of the smoke to rush Thrashers litter-bearers. Nevertheless, all of the dead and wounded were eventually recovered from the battlefield. Among the "walking wounded" returning to camp was Manuel Dobson, a 14-year-old African-American recruit from Leavenworth, Kansas, who had been shot in both arms during the fight.
Of the 25 men in Gardners detachment, (22 enlisted men and 3 officers) 19 had been wounded or killed in the battle. The collection of casualties was a task made all the more gruesome by the fact that several of the bodies had been severely burned by the prairie fire. Thrashers men also found that some of the dead were naked, having been stripped of their clothing and equipment by the rebels.
At "Fort Africa" the wounded were tended to, and seven graves were dug just to the north of the Toothman house for the fallen enlisted men. The body of Captain Crew was prepared for transport to his residence in Leavenworth, Kansas. Accompanying Crews body was his recovered watch, which was given to his grieving wife.
The day after the battle, reinforcements arrived from Kansas including another 150 or so African-American troops from Fort Lincoln, along with a unit of Ohio cavalry, and a section of artillery. The bolstered command patrolled the area for two more days. However the rebels had vacated Hog Island, and had moved off towards the community of Pleasant Gap in eastern Bates County. On the first day of November, the 1st Kansas Colored Volunteers marched out of their makeshift fort they had named "Africa" and returned to Fort Lincoln, Kansas.