126 MILITARY HISTORY OF CANADA
before the declaration of war, had taken a force of 2,500 men from Ohio into the territory of Michigan. He arrived at Detroit on July 5th and on the night of July 11th crossed the Straits at Detroit with a strong force, and from Sandwich issued a proclamation dooming to death every white man fighting at the side of Indians, and threatening all who resisted with "the horrors and calamities of war." In this emergency, the United Empire Loyalists thronged to the colours, and the Indians remained firm in their allegiance.
Colonel St. George had under his command in and about Fort Malden at Amherstburg 100 regulars, 300 militia, and about 150 Indians. Brock despatched Colonel Henry A. Procter with a reinforcement of the 41st Regiment to take charge on the Detroit frontier. When he arrived, towards the end of July, he found his right threatened by Hull, but he sent Tecumseh, the great chief of the Shawnee Indians, across the Detroit river to the American shore, to intercept a convoy commanded by Major Van Horne. On August 4th, the convoy was skilfully ambushed, defeated, and scattered near Brownstown, about twenty miles south of Detroit; the supplies were captured, and also the mail containing the correspondence of the United States Army. On the 7th and 8th of the month, Hull, who had relied on the country for supplies and upon the people for reinforcements, realized his mistake and withdrew his army to Fort Detroit.
On August 8th, Hull sent Colonel James Miller from Detroit to re-open communications with Ohio, and, on the 9th, Procter detached Major Muir across the river to intercept Miller. Muir, with 75 regulars, 60 militia, and 125 Indians, finding himself at Maguaga, fourteen miles below Detroit, in front of an American force of about 700 men, was obliged to retire after exchanging a few volleys with the enemy. But from a stronger position Muir's men stubbornly resisted the American advance and in the end Miller was compelled to lead his beaten force back to Detroit.