FREDERICK, Md. (AP) — The Maryland Office of Tourism is urging people to see a Civil War site near Frederick from a canoe.

Officials from the state, Frederick County and the National Park Service are holding a grand opening Wednesday for a paddling trail and a driving route, both featuring the 1864 Battle of Monocacy.

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The Monocacy Scenic River Water Trail is self-guided tour of more than 41 river miles. It includes the Monocacy National Battlefield, where Confederate troops forced a Union retreat after a daylong battle with 2,000 casualties.

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The clash became known as “Battle that Saved Washington” because it delayed the Confederates long enough for the Union to send reinforcements to Washington.

The driving trail documents the Confederates’ last invasion of the North, led by Lt. Gen. Jubal Early.

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