Fort McIntosh was a Revolutionary War era Patriot log frontier fort situated at the confluence of the Ohio River and the Beaver River in what is now Beaver, Pennsylvania. Jump to: navigation, search The American Revolution is the series of events, ideas, and changes that resulted in the political separation of thirteen colonies in North America from the British Empire and the creation of the United States of America. ... Patriots (also known as Partisans, Whigs or Rebels) were British North American colonists who rebelled against the Crown during the American Revolution and established the independent states that became the United States of America. ... Carl D. Perkins Bridge in Portsmouth, Ohio with Ohio River and Scioto River tributary on right. ... The Beaver River is a tributary of the Ohio River, approximately 21 mi (34 km) long, in western Pennsylvania in the United States. ... Beaver is a borough located in Beaver County, Pennsylvania. ...

The fortress was constructed in 1778 and named in honor of General Lachlan McIntosh. It was occupied until it was abandoned in 1791. 1778 was a common year starting on Thursday (see link for calendar). ... Lachlan McIntosh (1725-1806) An American military and political leader during the American Revolution and the early republic. ... 1791 was a common year starting on Saturday (see link for calendar). ...

After the Revolution, the fort was the home of the First American Regiment, the oldest active unit in the United States Army. The 3rd US Infantry Regiment is a unit of the United States Army. ...

The fortress was the site of the signing of the Treaty of Fort McIntosh on January 21, 1785. The Treaty of Fort McIntosh was a treaty between the United States government and representatives of the Wyandotte, Delaware, Chippewa and Ottawa nations of Native Americans. ... January 21 is the 21st day of the year in the Gregorian Calendar. ... 1785 was a common year starting on Saturday (see link for calendar). ...