The Americans desired to triumph on the land of Canada, after their victorious domination from Fort George. So, the Americans sent an army of 500 people and put them under the command of Lieutenant-Colonel Charles G. Boerstler (from Fort George) to sabotage and harass an advanced post in Beaver Dams, which was Brigadier General Vincent's.
The army that was there was a company of the 49th Foot, which was under the control of Lieutenant James FitzGibbon. FitzGibbon had been given warnings from Laura Secord (a Queenston housewife) and the Aboriginals that the Americans were approaching. At first, FitzGibbon waited for more evidence that the Americans would be approaching, because the warning that Secord sent did not have the elaboration. Then, the scouts of the Aboriginals reported the sightings of the Americans' approach to Captain Dominique Ducharme of the Indian Department, who sent the warning to FitzGibbon. Although Boerstler (in command of the 500 American troops) was fully mindful that the Aboriginals saw him, he still advanced.
Soon, the battle began. 300 Caughnawaga people battled against the Americans, coming from the rear. Next, 100 Mohawk combatants engaged in the battle, joining the Caughnawaga people. Not long after, the Americans were defeated and surrender was finally formed.