Lincoln's soldiering lasted about three months. He was in no battle, but there was plenty of "roughing it," and occasionally real hardship, as when the men were obliged to go for three days without food. The volunteers had not enlisted for any definite length of time, and seeing no prospect of fighting, they soon became clamorous to return home. Accordingly his and other companies were mustered out of service on May 27, at the mouth of Fox River. At the same time the governor, not wishing to weaken his forces before the arrival of other soldiers to take their places, called for volunteers to remain twenty days longer. Lincoln had gone to the frontier to do real service, not for the glory of being captain. Accordingly, on the day on which he was mustered out as an officer he re-enlisted, becoming Private Lincoln in Captain Iles's company of mounted volunteers, sometimes known as the Independent Spy Battalion. This organization appears to have been very independent indeed, not under the control of any regiment or brigade, but receiving orders directly from the commander-in-chief, and having many unusual privileges, such as freedom from all camp duties, and permission to draw rations as much and as often as they pleased. After laying down his official dignity and joining this band of privileged warriors, the campaign became much more of a holiday for the tall volunteer from New Salem. He entered with enthusiasm into all the games and athletic sports with which the soldiers beguiled the tedium of camp, and grew in popularity from beginning to end of his service. When, at length, the Independent Spy Battalion was mustered out on June 16, 1832, he started on the journey home with a merry group of his companions. He and his messmate, George M. Harrison, had the misfortune to have their horses stolen the very day before, but Harrison's record says: "I laughed at our fate, and he joked at it, and we all started of merrily. The generous men of our company walked and rode by turns with us, and we fared about equal with the rest. But for this generosity, our legs would have had to do the better work, for in that day this dreary route furnished no horses to buy or to steal, and whether on horse or afoot, we always had company, for many of the horses' backs were too sore for riding."