Tension was increasing between the United Kingdom and the United States in the early months of 1812. Michigan Territory Governor William Hull urged President James Madison and Secretary of War William Eustis to form an army which would secure the Northwest Territory against Indians who were being incited by British agents and fur trading companies to take up arms against the United States. It was urgently necessary to reinforce the outpost of Detroit, which had a population of 800 and a garrison of 120 soldiers. It was also suggested that this army might invade the western districts of Upper Canada, where support might be expected from the many recent immigrants from the United States who had been attracted by generous land grants.