Battle of the Thousand Islands

Williamson's gunboats capture the French corvette L'Outaouaise near Point au Baril, painted by Thomas Davies

Date	16–24 August 1760
Location	Saint Lawrence River, Thousand Islands near Ogdensburg, New York and Prescott, Ontario
Result	Decisive British-Iroquois victory

Belligerents

Great Britain
Iroquois Confederacy

France

Commanders and leaders

Jeffrey Amherst

Pierre Pouchot

Strength

11,000 regulars and militia
700 Iroquois

300 regulars and sailors

Casualties and losses

26 dead
47 wounded (likely excluding militia)

300 dead, wounded, or captured

The Battle of the Thousand Islands during the French and Indian war (also known as the Siege of Montreal) was fought 16–24 August 1760, in the upper St. Lawrence River, among the Thousand Islands, along the present day Canada–United States border, by British and French forces during the closing phases of the Seven Years' War, as it is called in Canada and Europe, or the French and Indian War as it is referred to in the United States.

The engagement took place at Fort Lévis (about one mile (1.6 km) downstream from the modern Ogdensburg–Prescott International Bridge), Pointe au Baril (present-day Maitland, Ontario), and the surrounding waters and islands. The small French garrison at Fort Lévis held the much larger British army at bay for over a week, managing to sink two British warships and to cripple a third. Their resistance delayed the British advance to Montreal from the west.

By August 1760, the French were building Fort Lévis at Île Royale (present-day Chimney Island New York) in the St. Lawrence River. Captain Pierre Pouchot was assigned its defense. Pouchot had been taken prisoner after the siege of Fort Niagara, but he was later released in a prisoner exchange. Chevalier de Lévis' original design for the fort called for stone walls, 200 guns and some 2,500 troops. What Pouchot had was a small fort with wooden stockades, five cannon and 200 soldiers. Also under Pouchot's command were the corvettes l'Outaouaise and l'Iroquoise, crewed by 200 sailors and voyageurs. l'Iroquoise, under command of Commodore René Hypolite Pépin dit La Force, was armed with ten 12-pound cannon and swivel guns . l'Outaouaise, commanded by Captain Pierre Boucher de LaBroquerie carried ten 12-pounders, one 18-pound gun and swivel guns.

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