The Horsemeat March of 1876, also known as the Mud March and the Starvation March, was a military expedition led by General George Crook in pursuit of a band of Sioux fleeing from anticipated retaliation for their massacre of George Armstrong Custer's 7th Cavalry Regiment at the Battle of the Little Bighorn. Poorly rationed and hampered by muddy conditions, the soldiers eventually had to butcher and eat their horses and mules as they became lame or injured. The Horsemeat March ended with the Battle of Slim Buttes and the capture and looting of American Horse the Elder's richly stocked village.
Disputes over the Black Hills of the Dakota Territory came to a high during the Great Sioux War of 1876 between the U.S. Army and the many Native American groups in the area (Lakota, Sioux, Arapaho and Northern Cheyenne). After the Battle of Powder River in March, organized by General Crook and led by Colonel Joseph J. Reynolds, a larger effort was made for a battle later in the spring in order to move the Indians to reservations. Multiple columns of soldiers were made to trap the enemy and prevent escaping. Crook’s command, the 2nd and 3rd Cavalries and 4th and 9th Infantries, moved north from Fort Fetterman for the battle. However, they encountered the Sioux and Cheyenne, resulting in the Battle of the Rosebud, which delayed them to the columns in Dakota. The subsequent Battle of the Little Bighorn went on without them.