The Battle of Plattsburgh, a critical engagement during the War of 1812, was not solely a naval affair. While the naval victory on Lake Champlain often takes center stage, the concurrent land campaign played an equally vital role in repelling the final British invasion of the northern United States. Under Lieutenant General Sir George Prevost, a formidable British army converged on Plattsburgh, New York, facing a determined American defense led by
Brigadier General Alexander Macomb. The land battle, characterized by skirmishes, strategic delays, and ultimately a British retreat, underscored the interconnectedness of land and naval power in 19th-century warfare.
The British Advance and American Delaying Tactics
On August 31, Prevost initiated his southward march towards Plattsburgh. Recognizing the numerical superiority of the British, Brigadier General Macomb implemented a strategy of delay and attrition. He dispatched a force of 450 regulars under Captain Sproul and Major John E. Wool, 110 riflemen under Major Daniel Appling, 700 New York militia under Major General Benjamin Mooers, and two 6-pounder guns under Captain Leonard. Their mission was to fight a delaying action, slowing the British advance and allowing time for Plattsburgh's defenses to be strengthened.
As the Americans slowly fell back, they employed various tactics to impede the British. They set up roadblocks, burned bridges, and even mislabeled streets to disorient and delay the invading force. Despite these efforts, the British advanced steadily, often without deploying out of column or returning fire, relying on their flank guards. By September 6, Prevost's army reached Plattsburgh, where the American rearguards retired across the Saranac River, tearing up the planks from the bridges to prevent immediate pursuit. Prevost, however, did not immediately attack, indicating a cautious approach that would later prove problematic for the British.
Fortifications, Skirmishes, and Prevost's Hesitation
Upon reaching Plattsburgh, Prevost's initial hesitation was evident. On September 7, he ordered Major General Robinson to cross the Saranac, but Robinson was frustrated by Prevost's lack of intelligence regarding American defenses and local geography. Tentative British attacks across the bridges were repulsed by Wool's regulars. Prevost then abandoned immediate river crossings and began constructing batteries, a move that allowed the Americans to respond effectively. American forces used heated cannonballs to set fire to sixteen buildings in Plattsburgh that the British were using for cover, forcing them to withdraw further.
Skirmishing and artillery exchanges continued. On September 9, a daring night raid by 50 Americans led by Captain George McGlassin destroyed a British Congreve rocket battery located only 500 yards from Fort Brown, one of the main American fortifications. McGlassin's raiders killed one British officer and six British troops, wounded several others, and destroyed all the artillery equipment without suffering any casualties themselves. Meanwhile, the British located Pike's Ford, a crossing point across the Saranac three miles above Macomb's defenses. Prevost planned a coordinated attack: Downie's ships would engage the American fleet, while Major General Brisbane would conduct a feint attack across the bridges, and Major General Robinson's brigade would cross the ford for the main assault on the American left flank, supported by Major General Power's brigade. Brisbane's feint was to become a real attack once the American ships were defeated.
The Decisive Retreat and Its Consequences
Prevost's land attack was intended to coincide with the naval engagement, but it was slow to materialize. Orders to move were not issued until 10 a.m., more than an hour after the naval battle had begun. The American and British batteries engaged in a duel, with the Americans gaining a slight advantage, and Brisbane's feint attack at the bridges was easily repulsed. The turning point came when a messenger informed Prevost of Downie's defeat on the lake. Realizing that without naval support and supply, any military advantage gained by storming Plattsburgh would be worthless, Prevost concluded he had no option but to retreat.
Bugle calls sounded the retreat along the British lines. Robinson's brigade, misdirected by staff officers, initially missed their objective ford. After retracing their steps, they drove back the American defenders and were preparing to advance when Prevost's orders to call off the attack arrived. The light company of the British 76th Regiment of Foot, skirmishing ahead of the main body, was surrounded and cut off by overwhelming numbers of American militia when the retreat orders came too late. Captain John Purchas, commanding the company, was killed while waving a flag of truce, and three officers and 31 other ranks were taken prisoner. Major General Brisbane protested the order to retreat but complied. The British began their withdrawal to Canada after dark, leaving behind large quantities of ammunition and stores. While there had been little desertion during the advance, at least 234 soldiers deserted during the retreat, primarily from units like the Regiment de Meuron and the 2/8th Regiment, rather than the Peninsular War veterans. The British suffered 37 killed, 150 wounded, and 57 missing in the land engagement, while Macomb reported 37 killed, 62 wounded, and 20 missing for regular U.S. Army troops, with considerable additional casualties among the militia and volunteers.
