Fort Montgomery (Hudson River) - Fort Montgomery in The American Revolution

Fort Montgomery in The American Revolution

Fort Montgomery was located at the confluence of Popolopen Creek with the Hudson River near Bear Mountain in Orange County, New York. The fortifications included a river battery of six 32-pound cannons, a cable chain supported by a boom across the Hudson River (see Hudson River Chain), and landward redoubts connected by ramparts, all situated on a cliff promontory rising 100 feet (30 m) above the river. The fort was commanded by General George Clinton, also the newly appointed governor of the state. Fort Montgomery and its companion fortification Fort Clinton, on the southern bank of the Popolopen, held a combined garrison of roughly 700 American soldiers. These men were from the 5th NY Regiment, Lamb's Artillery, Orange County Militia, and Ulster County Militia.

The strategic importance of the ability to control navigation along the Hudson River was obvious to both the Americans and the British from the outbreak of open hostilities. The Hudson was the major means for transportation of supplies and troops throughout a large portion of the northeast. The fort was constructed at a site noted as early as the seventeenth century for its strategic advantage in controlling navigation along the river.

A month after the first open armed conflict in Lexington, the Continental Congress resolved on May 25, 1775 to build fortifications in the Hudson highlands for the purpose of protecting and maintaining control of the Hudson River. It noted that "…a post be also taken in the Highlands on each side of Hudson’s River and batteries erected in such a manner as will most effectually prevent any vessels passing that may be sent to harass the inhabitants on the borders of said river…"

James Clinton and Christopher Tappan, both lifetime residents of the area, were sent to scout appropriate locations. The initial site chosen was further to the north at West Point, and construction of the fortifications to be named Fort Constitution began. However, difficulties in construction and management of the original plan of fortifications, together with escalating costs, led to abandonment of that project. The site on the north side of Popolopen Creek across from Anthony's Nose was proposed, and the materials and resources from Fort Constitution were redirected to the construction at the new site. Construction began on the new Fort Montgomery in March 1776.

The strategic importance of the opposite bank of Popolopen Creek was quickly realized, as it was an elevated cliff terrace with a full view of the Fort Montgomery site and could not be left undefended. The Army built the smaller fortification named Fort Clinton at that site. These two forts and their associated cannon batteries effectively controlled this stretch of the Hudson River. The Army also conceived a major engineering project to effectively blockade any naval traffic headed north on the river. In 1776 a chain and boom were built across the river to provide a physical barrier to ships, in addition to the combined firepower of the fortifications, which could be massed against ships.

In July 1776, the New York convention appointed a committee, including John Jay, Robert Livingston, George Clinton and Robert Yates, to "devise and carry into execution" measures for "obstructing the channel of Hudson's river, or annoying the navigation of the said River." Worried about lack of arms, it worked to buy more cannon.