Major-General Sir Isaac Brock (6 October 1769 – 13 October 1812) was a British Army officer and colonial administrator from Guernsey. He is best remembered for his victory at the siege of Detroit and his death at the Battle of Queenston Heights during the War of 1812.
Brock joined the army as an ensign in 1785. By 1797, he was a lieutenant colonel with the 49th Regiment of Foot. The regiment participated in the Anglo-Russian invasion of Holland in 1799 and in the 1801 naval expedition against Copenhagen. In 1802, the 49th Regiment was assigned to garrison duty in British North America. Despite facing desertions and near-mutinies, Brock successfully commanded his regiment in Upper Canada (part of present-day Ontario) for several years. He was promoted to colonel in 1805 and appointed brigadier general in 1808. In 1811 he was promoted to major general and given responsibility for defending Upper Canada against the threat of an American invasion. While many in Canada and Britain believed war could be averted, Brock began to ready the regulars and militia for what was to come. When the War of 1812 broke out, the populace was prepared, and quick victories at Fort Mackinac and Detroit temporarily thwarted American invasion attempts.
Brock's actions, particularly his success at Detroit, earned him accolades including a knighthood in the Order of the Bath and the sobriquet "The Hero of Upper Canada". His name is often linked with that of the Indigenous leader Tecumseh, although the two men collaborated in person only for a few days.
On October 13, 1812, the Americans crossed the Niagara River at Queenston and in the opening stages of the Battle of Queenston Heights captured a British artillery position on the high ground south of the village. Brock was shot and killed by an American sniper while leading a detachment of regulars and militia in an unsuccessful counterattack. Several hours later, British reinforcements from Niagara and Chippewa under Major General Roger Hale Sheaffe forced an American surrender.
Brock was born at St Peter Port on the Channel Island of Guernsey. He was the eighth son of John Brock (1729–1777), a former midshipman in the Royal Navy. His mother was Elizabeth de Lisle, the daughter of Daniel de Lisle, the lieutenant-bailiff of Guernsey. The Brocks were an English family who had been established in Guernsey since the sixteenth century. Brock earned a reputation during his early education on Guernsey as an assiduous student, as well as an exceptional swimmer and boxer. At age eleven, he was sent to school in Southampton, and afterwards to Rotterdam where he became fluent in French.
Although his formal education ended when he was a teenager, Brock appreciated its importance. As an adult, he spent much time reading in order to broaden his knowledge. He read many works on military tactics and science, but also read ancient history and other less practical topics. At the time of his death, he owned a modest library of books, including classic works by Shakespeare, Voltaire, and Samuel Johnson.
Brock kept his reputation as an "unusually tall, robust" man throughout his life, with an adult height of about 6 ft 2 in (188 cm). Measurements taken from his uniform show that at his death he had a waist size of 47 inches (120 cm), while the inside brim of his hat measured 24 inches (61 cm) in circumference. Although Brock was noted as a handsome man who enjoyed the company of women, he never married.
Brock had a successful pre-war military career and a quick rise through the ranks, which many commented on at the time. Some credited luck, and others skill, in his rapid promotions. Brock had substantial portions of both on his way to prominence. Lacking special political connections, his ability to gain promotions even when Britain was at peace attests to his ambition, and his skills in recruiting men and organizing finances.
Brock joined the 8th (The King's) Regiment of Foot on 8 March 1785 with the rank of ensign. As was common at the time, Brock's commission was purchased for him by his family. When Brock joined the 8th Foot, its commanding officer was Lieutenant Colonel Arent DePeyster who had served in North America during the Revolutionary War as commandant of Fort Detroit, and who had substantial experience negotiating with Britain's Indigenous allies. On 16 January 1790, Brock purchased the rank of lieutenant and later that year raised his own company of men. As a result, he obtained a commission as captain of an Independent Company of Foot on 27 January 1791, but transferred to the 49th (Hertfordshire) Regiment of Foot on 15 June 1791.
At the time of Brock's transfer, the 49th Foot was stationed in Barbados in the West Indies. His nephew and biographer, Ferdinand Brock Tupper, asserts that shortly after Brock arrived in Barbados, a "professional dueller" forced a match on him. As the one being challenged Brock had his choice of terms, and he insisted that they use pistols. His friends were shocked as Brock was a large target and his opponent an expert shot. Brock, however, refused to change his mind. When the duellist arrived at the field, he asked Brock to decide how many paces they would take. Brock insisted that the duel would take place not at the usual range, but at handkerchief distance (i.e., close range). The duellist declined and was subsequently forced out of the regiment. This contributed to Brock's popularity and reputation among his fellow officers, as this duellist had a formidable reputation and was regarded as a bully.
Several months after Brock's arrival, the regiment was ordered to Jamaica. In 1793, Brock fell victim to yellow fever and became seriously ill. He did not fully recover until he returned home to Guernsey on leave. After regaining his strength, he became involved in recruiting efforts and the training of volunteer companies raised for home defence. Brock purchased his majority on 27 June 1795. He rejoined the 49th Foot in the summer of 1796 when the regiment returned from the West Indies.
Brock purchased the rank of lieutenant-colonel for £3,000 in October 1797. He served as the acting commanding officer of the 49th Foot for several months, and officially assumed command of the regiment on 22 March 1798 with the retirement of Lieutenant Colonel Frederick Keppel.
In 1799, during the War of the Second Coalition, the 49th Foot was assigned to the Anglo-Russian expedition against the Batavian Republic. The 49th Foot were attached to Major General John Moore's 4th Brigade, part of the division commanded by Lieutenant General Sir Ralph Abercromby. The expedition faced minimal opposition when they landed at Callantsoog, south of Den Helder on 27 August. Brock first saw combat when the 49th Foot helped fend off a French attack on 10 September. On 19 September, the 4th Brigade captured Hoorn without a shot but withdrew from the city shortly thereafter.
On 2 October, the 49th Foot was actively involved in heavy combat at the Battle of Alkmaar. During the battle, the 4th Brigade served as the vanguard of a column that steadily proceeded south along the beach from Petten towards Egmond aan Zee. As it advanced, the column was increasing harassed by French sharpshooters hiding in patches of thick scrub. Eventually, the French blocked the advance by taking up a strong position in the sand dunes overlooking the beach. Moore's brigade was ordered to dislodge the French from their position with a bayonet charge. In a letter to his brother Brock wrote that he "ordered a charge, which I assure you was executed with the greatest gallantry, though not in the greatest order, as the nature of the ground admitted of none."
The engagement continued for several hours until the French finally gave way and the British were able to push forward. By the end of the day the 49th Foot had suffered 33 killed including 2 officers, 56 wounded, and 24 missing. Brock himself was injured during the fighting when he was hit in the throat by a spent musket ball. His neck cloth prevented a possibly fatal injury. Brock wrote, "I got knocked down shortly after the enemy began to retreat, but never quitted the field, and returned to my duty in less than half an hour."