A Fort In 18th Century Detroit

Source

From The centennial celebration of the evacuation of Detroit by the British: July ...:

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Source - Grenadier In Uniform

"The fort is garrisoned by a company of artillery under the command of Captain Spear, two companies of infantry, and one of grenadiers, of the Twenty-fourth regiment, which is Colonel [Richard] England's regiment.  The other companies are at Michilimackinac and other northern posts."