What was Michigan's first military outpost?

Michigan's first military outpost was Fort Pontchartrain du Détroit, established in 1701 by the French. Located in what is now Detroit, it served as a strategic fortification and a center for trade and military operations in the region. The fort played a significant role in the French and Indian War and later in the American Revolutionary War. Over time, it became a key site for the expansion of European settlements in the Great Lakes area.