Fort Detroit was besieged by Huron, Chippewa, Potawatomi, Ottawa, and a few other tribes from May 9 until Oct. 31 1763 during what is comonly called " Pontiacs war". Chief Pontiac wanted to drive the British out of the territory and formed alliances with the tribes to do that. I would suppose that a soldier might have some time on his hands during the 5 month siege to make a horn such as this. I would encourage any of you who are history buffs to google up "siege of fort Detroit" and the "battle of bloody run." Would you believe that some Great Lakes indians partook in ritual caniballism? It's true. I think that I would rather be in the fort carving on a new powder horn than be on the menu in an indian village! The map depicts the land and waterways between Lake Erie and Lake St. Clair and shows the location of the fort and surrounding indian encampments.