Complex sentence: After the war, US Army made various expeditions against the Plains tribes in Woodward County, led by the lieutenant colonels Alfred Sully and George Armstrong Custer, and General Philip Sheridan, who were stationed nearby at Fort Supply.
Split into simpler sentences: After the war, US Army made various expeditions against the Plains tribes in Woodward County. These were led by the lieutenant colonels Alfred Sully and George Armstrong Custer, and General Philip Sheridan, who were stationed nearby at Fort Supply.