Henry van Rensselaer engaged in a fierce battle near Fort Anne, acting on orders from General Philip Schuyler. He was given at least two objectives: hold the enemy at Fort Anne in order to facilitate the removal of cannon and armaments at Fort Amsterdam, to a place of safety; and assist Colonel Pierse Long with his retreat from the 1777 Battle of Ticonderoga. Colonel John Hill and his British troops pursued the Rebels of the Crown from Lake Champlain up Wood creek to a point North East of Fort Anne. As planned, Van Rensselaer met Long and his regiment from New Hampshire to assist in their retreat. Their objective was to slow British movement. They assessed a numerical advantage over the British. Meanwhile, what appeared to be an American traitor, tricked Colonel Hill into believing there were twice as many as the true amount of Rebel troops. This news may have made Hill act more cautiously than he had planned, knowing his reinforcements have not arrived and otherwise not wanting to be spotted in an unprovoked retreat. A series of retreats and advances by the Patriots and the British culminated into a two sided bombardment. Van Rensselaer led an advance on British troops when he was shot in the thigh through to his knee, shattering his femur. As he lie near the British troops, he could hear little noise. He was confident the British were in retreat as he ordered his troops to "Attack!...Attack"! Colonel van Rensselaer is credited for this critical decision in the battle of Fort Anne, July 8, 1777. Not only were the British delayed, but forced into retreat after Van Rensselaer launched a decisive assault, spanning 2 hours of all-out battle. Nearly all munitions from both Patriots and British alike were exhausted on their opposing forces. The British were so overwhelmed, when the battle ended, they were left little choice - but to retreat and abandon several of their wounded on the field to be taken prisoner. Neither the Patriots nor the British knew their opponent's supplies were crucially low. The Patriots proceeded to Fort Anne with their prisoners, two injured and two men who gave the ultimate sacrifice for liberty; Sgt. Isaac Davis and Ens. Christopher Walcutt. Their stay at Fort Anne was short. They were looking forward to a 14-mile - seven-hour journey, munitions were nearly depleted, rain was on its way and food was in short supply. As they left they were determined in preventing the British from making use Fort Anne, it was set ablaze and Van Rensselaer's regiment placed every conceivable obstacle behind in their path by felling trees and rolling boulders into the road to hinder any British advance as the Rebels made their way to Fort Edward.
Personal life
He married Alida Bradt, a daughter of Hendrick Bradt and Rebecca Bradt. Together, they had:
Catharine Van Rensselaer, who married Cornelius Schermerhorn in 1793.
