The Battle of Fort Frontenac took place from August 25 to August 27 1758 near the end of the Seven Years War (referred to as the French and Indian War in the United States) between France and Britain. The location of the battle was the site of the modern-day city of Kingston, Ontario, at the eastern end of Lake Ontario where it meets the St. Lawrence River. A British colonial army under the command of Lt. Col John Bradstreet led an army of several thousand militia, who beseiged the 110 French soldiers garrisoned inside the limestone fortifications and won their surrender two days later, cutting one of the two major communication and supply lines between major eastern centres of Montreal and Quebec City and France's western territories (the northern route, along the Ottawa River, remained open throughout the war).