The winter of 1779-80 was one of unprecedented rigor. The shivering Iroquois, at Niagara, suffered severely; but the fire of hate burned in the heart of Brant as hot as ever. He had long meditated a terrible revenge upon the Oneidas, who had refused to follow his leadership, and persisted in neutrality. Upon them he laid the blame of all his disasters. That winter he led his warriors across frozen rivers and through snowy forests, to the home of the unsuspecting Oneidas. Of what followed we have no detailed history. It is only known that Brant fell upon them without mercy, that their villages and wigwams, their store-houses and council buildings were suddenly destroyed, that vast numbers of them were slain, and that the survivors fled to the white men for protection. The poor refugees, stricken for a fault which was not their own, were allotted rude and comfortless quarters near Schenectady, where they were supported by the Government till the close of the war.
The Tories and Indians, to the number of about one thousand, under Sir John Johnson, Brant and Cornplanter, planned another invasion of the Mohawk settlements. Brant's appetite for vengeance was unabated. He was ambitious to surpass the work of Sullivan.
On the morning of October 16, 1780, the occupants of the little fort at Middleburg, far down the Mohawk Valley, looked out at sunrise on a startling sight. In every direction barns, hay-stacks, granaries and many houses were on fire. Everywhere the people fled, abandoning everything in their madness of fear. Their alarm was justifiable. Brant's army, without a moment's warning, was upon them.
At first the Tories and Indians mounted their little cannon and prepared to besiege the fort. But meeting with a stubborn resistance, and finding that the siege would delay them, Brant, a past-master of guerrilla warfare, gave up the notion of taking the fort, and swept on down the valley. In their course the whole valley on both sides of the Mohawk was laid in ruins. Houses and barns were burned, the horses and cattle killed or driven off, and those of the inhabitants who were not safely within the walls of their fortifications were either killed or taken captive.
But the torch of destruction was stayed wherever lived a Tory. They passed by the homes of all who were loyal to England. Then one of the strange sides of human nature asserted itself. The settlers, furious at their own wrongs, and aflame with passion at the sight of their Tory neighbors' immunity from harm, issued from the forts and with their own hands applied the torch to all houses left standing, thus completing the work which transformed a verdant valley into a mighty cinder.