Fort Armstrong
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(1816-1836), was one of a chain of frontier defenses erected after the War of 1812. It was located at the foot of Rock Island (see Rock Island, Illinois), in the Mississippi River, five miles from the principal Sac and Fox village on Rock River in Illinois. Of stone and timber construction, 300 feet square, the fort was commenced in May, 1816, and completed the following year. It was garrisoned until 1836, usually by two companies of United States regulars. Davy Crockett commented on the significance of the fortifications.
[edit] Reference
D. W. Flagler, History of the Rock Island Arsenal; Stephen H. Long, Voyage in a Six-Oared Skiff to the Falls of Saint Anthony in 1817, Minnesota Historical Society Collections, II, Part I.