Battle of Fort Oswego
Conflict	Seven Years' War
Date	August 10 - August 14, 1756
Place	Oswego, New York
Result	Decisive French victory
Combatants France Britain Commanders Louis-Joseph de Montcalm James Mercer † Strength 3,000 2,000 Casualties 30 dead or wounded 80 dead 1,700 captured 121 cannons captured

The Battle of Fort Oswego was the first in a series of early French victories in the French and Indian War theater of the Seven Years' War that belied New France's military vulnerability. On the week of August 10, 1756, a force of regulars and Canadian militia under General Montcalm captured and occupied the British fortifications at Fort Oswego, effectively interrupting American shipping on Lake Ontario and removing the threat to nearby Fort Frontenac.