Complex sentence: A warning shot was fired from the tower when they came into view, with the Sioux and Winnebagoes leading the way, followed by the Sac and Fox, and the fur traders, including Hesse, bringing up the rear.
Split into simpler sentences: A warning shot was fired from the tower when they came into view. The Sioux and Winnebagoes led the way, followed by the Sac, Fox and fur traders, including Hesse, in the rear.