Skip to content
The War AtlasThe · War · Atlas

BATTLE // September 17, 1775

Siege of Fort St. Jean

LOADING MAP TELEMETRY…

Overview

The siege of Fort St. Jean was conducted by American Brigadier General Richard Montgomery on the town and fort of Saint-Jean, also called St. John, St. Johns, or St. John's, in the British province of Quebec during the American Revolutionary War. The siege lasted from September 17 to November 3, 1775.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

Significance

The Siege of Fort St. Jean was a key early operation in the American invasion of Quebec during the Revolutionary War. Conducted by Brigadier General Richard Montgomery against the British garrison at Saint-Jean, the siege occupied a significant stretch of the 1775 campaign season, running from September 17 to November 3. The prolonged duration of the siege consumed time and resources that constrained subsequent American operations deeper into Quebec, though it represented a necessary step in Montgomery's northward push toward Montreal and ultimately Quebec City. The investment of Saint-Jean by a force of 1,500 Continental troops, under commanders including Montgomery, David Wooster, and James Livingston, reflected the American effort to neutralize British defensive positions along the Richelieu River corridor before advancing further into the province.

Forces & casualties

Troop strength

  • United Colonies1,500
    medium

Commanders (6)

Compare with sibling battle

6 options

Pick a battle to compare side-by-side

Related

6 sibling battles · 6 factions

Last verified June 2026
Cite this page →Suggest a correction →