The Sioux were retreating before General H.H. Sibley's 2000 men after defeats at Big Mound and Dead Buffalo Lake.  To protect the retreat of the main body of women and children and their lodges, around 2000 Sioux warriors threw a blocking force around Sibley's troops near Stony Lake and then made an attack on his supply train about two hours after dawn.  Cavalry, infantry, and artillery engaged the hostiles but casualties were light on both sides. The Sioux had, however, bought the time their families needed to cross the Missouri River.  (By John Osborne) 

Two days earlier General H.H. Sibley and his 2000 men had defeated the main body of the Santee Sioux at Big Mound and driven them westward. The Santee were then reinforced by the Lakota Sioux who made a bold attempt to destroy the supply wagons of Sibley's column.  After a sharp fight, the Lakota, who included Sitting Bill, were driven off in a relatively small skirmish.  Around ten Sioux may have become casualties.  Sibley lost one man killed.  The Sioux retreat and the Army's pursuit continued.  (By John Osborne) 

After having endured five weeks of difficult pursuit of Sioux hostiles he had been ordered to punish, General H.H. Sibley and his 2000 men caught up with the main body of the Santee Sioux at Big Mound in present-day Kidder County, North Dakota.  There, after attempts to negotiate broke down when an Army doctor was murdered, a running fight under gray skies ended with defeat for the hostiles, who broke away to the west.  The Sioux suffered around eighty killed and wounded while Sibley lost three men killed, one of them by lighting. (By John Osborne) 

Having left Camp Pope the month before and endured a difficult and sapping march in pursuit of the Santee Sioux, General H.H. Sibley finally found himself close enough to engage the hostile's main body.  He left his camp on Lake Emily in Le Sueur County, Minnesota with a stripped-down force of around 2000 men. A four-day forced march brought him into contact with the Sioux at Big Mound where the first of four battles took place. All encounters went the way of the army and by July 29, 1863, the Sioux were driven across the Missouri River. (By John Osborne)