A four-year occupation was started in 1814 which saw Eastport
and a large portion of eastern Maine either occupied by or
under threat of occupation by the British. During that time
Eastport became part of New Brunswick, Canada, and the
British Empire. On that July day the Stars and Stripes was
lowered from the flagpole at Fort Sullivan to be replaced by the
Union Jack. Even after word of peace reached England in
February, 1815, British forces remained in Eastport, which they
insisted had always been a part of New Brunswick.  This
territory was returned to the United States by the
Treaty of
Ghent. The U.S. Senate unanimously approved the treaty on
February 16, 1815, and President James Madison exchanged
ratification papers with a British diplomat in Washington on
February 17; the treaty was proclaimed on February 18 and
fighting immediately stopped when news of the treaty finally
reached the United States.

Fort Sullivan and the Powder Magazine sites contain
archeological remains and, as it was for the small band of
American defenders, offer amazing views of the passage taken
by the invading armada.
Fort Sullivan Powder House