Aroostook War

 (1838-1842) - A United States - Canada border dispute over the boundary line between the two countries that started in 1838 over logging issues.

The US Army established Fort Fairfield in April 1839 and Fort Kent in October 1839 to police the border. Hancock Barracks was established at Houlton, Maine and garrisoned with three companies of the 1st U.S. Artillery.

The dispute ended with the Webster-Ashburton Treaty of Washington in 1842, that treaty settled the Aroostook area issues and covered other boundary issues along the Canadian border.

Links:
 * Wikipedia - Aroostook War