In October 1777, roughly 700 American soldiers made a heroic stand against 2,100 British and Loyalist troops attacking Forts Montgomery and Clinton. Though losing both forts, a brave American defense disrupted British plans to control the Hudson River. Today, the ruins of Fort Montgomery remain a genuine artifact of war and a testament to the American struggle for independence.

(Taken from the pamphet given out at the Fort Montgomery visitors center.    See full pamphet below.)  

   

 

The battle was a pyrrhic victory for the British, however, as the campaign against Forts Montgomery and Clinton caused delays that would give American forces the upper hand at the Battle of Bemis Heights in Saratoga. The reinforcements for which British General Burgoyne was waiting were held up, and Burgoyne was forced to surrender at Saratoga ten days later with his reinforcements still far to the south.

http://en.wikipedia.org/wiki/Fort_Montgomery_%28Hudson_River%29