The St. Lawrence & Montreal Campaign

The Strategic Objective

The St. Lawrence and Montreal Campaign of autumn 1813 was the most ambitious American offensive of the entire war — and its most complete failure. A two-pronged assault aimed at capturing Montreal, the strategic key to British North America, was defeated by forces that were outnumbered, in one case, by nearly ten to one. The campaign’s failure permanently secured the St. Lawrence corridor and ended any realistic American hope of conquering Canada.

The strategic logic was sound. Montreal sat at the junction of the St. Lawrence and Ottawa Rivers, controlling the supply line to every British position west of Quebec. If Montreal fell, Upper Canada would be cut off. The province would wither. The war would be won.

“The plan required coordination between two generals who despised each other. Hampton and Wilkinson’s mutual loathing was a matter of public record. Neither would subordinate himself to the other, and neither trusted the other to fulfil his part of the operation. The result was predictable.”— Donald R. Hickey, A Forgotten Conflict

Chateauguay: 339 Against 3,000

Hampton’s advance from Lake Champlain brought him to the Chateauguay River, where Lieutenant Colonel Charles de Salaberry — a French Canadian professional soldier of extraordinary ability — had prepared a defensive position with approximately 339 men: Canadian Voltigeurs, Select Embodied Militia, and Abenaki warriors.

De Salaberry’s preparations were meticulous: multiple lines of abattis, concealed firing positions, and an elaborate deception involving buglers posted deep in the woods to simulate the presence of large formations. When Hampton’s 3,000 men appeared on 26 October, the plan unfolded with precision. Accurate fire, echoing bugle calls, and war cries from multiple directions convinced Hampton that he faced a much larger force. He withdrew.

“Chateauguay was the war’s finest defensive action — 339 men defeating 3,000 through preparation, deception, and personal leadership. De Salaberry became a French-Canadian national hero, and the battle became a foundational event in Quebec’s military identity.”— Pierre Berton, The Invasion of Canada

“The Americans had assumed that French Canadians, as a conquered population, would welcome liberation. Chateauguay demonstrated the opposite. French Canadians identified their interests with the defence of their homeland, not with the American invaders who promised a freedom they had not requested.”— Andrew Lambert, The Challenge

Crysler’s Farm: Professionalism Against Numbers

Wilkinson’s flotilla of 300 boats carrying 8,000 men — the largest American military expedition of the conflict — descended the St. Lawrence under constant harassment. Lieutenant Colonel Joseph Morrison, commanding approximately 900 regulars of the 49th and 89th Regiments, positioned his force at Crysler’s Farm on 11 November.

The 49th was Brock’s own regiment — men with a personal stake in Canada’s defence. Their fire discipline was exemplary: controlled volleys at effective range, followed by bayonet charges that exploited disorder in the American formations. The American attacks came in uncoordinated waves, never achieving the concentration necessary to overwhelm the defence. After two hours, Boyd’s force had been comprehensively repulsed: 102 killed, 237 wounded, approximately 100 captured. British losses were 22 killed and 148 wounded.

“Crysler’s Farm was a victory of professionalism over numbers. Morrison’s 900 men defeated a force more than four times their size through superior training, superior discipline, and superior leadership. It validated the defensive strategy that Prévost had pursued from the beginning.”— Jon Latimer, 1812: War with America

The Consequences

The combined effect of Chateauguay and Crysler’s Farm was conclusive. An army of 8,000 men had been turned back without reaching its objective. Total British and Canadian casualties across both engagements were fewer than 200. The St. Lawrence corridor was permanently secured.

“The failure of the Montreal campaign ended any realistic American hope of conquering Canada. After November 1813, the war became, for the Americans, a defensive struggle — a reality that sits uncomfortably alongside the narrative of American triumph.”— Jeremy Black, The War of 1812 in the Age of Napoleon