In past weeks we’ve already driven through two Dakota War battlefields at 75 mph--Big Mound, which took place north of Tappen, and Dead Buffalo Lake, which happened near Dawson. These battles of 1863 all took place in the central reaches of the Missouri Coteau and within spitting distance of the future route of Interstate 94. The region’s lakes, or maybe you call them sloughs, figure in the military actions associated with what is commonly known as the Sibley Expedition of 1863.