The Battle of Waterloo was fought on June 18th, 1815, near the village of Waterloo approximately 12 miles south of Brussels in what is now Belgium. It pitted Napoleon Bonaparte’s French army of approximately 72,000 men against a British-led allied force of around 68,000 under the Duke of Wellington and, arriving later in the day, three corps of the Prussian army under Field Marshal Blucher. The battle was a decisive allied victory. Napoleon’s army was routed and collapsed in disorder by the evening, leaving approximately 25,000 men killed and wounded and a further 8,000 to 9,000 captured. Wellington’s casualties amounted to around 15,000 men and Blucher’s to approximately 8,000. Napoleon abdicated four days later on June 22nd, 1815, and was subsequently exiled to the remote island of Saint Helena in the South Atlantic, where he died in May of 1821. The Battle of Waterloo ended the Napoleonic Wars, which had produced more than two decades of recurrent conflict across Europe and beyond.
What Was the Napoleonic Era?
The Napoleonic Era refers to the period of French and European history dominated by Napoleon Bonaparte, lasting from his seizure of power in France in 1799 to his final defeat and exile in 1815. The Battle of Waterloo was the concluding engagement of this era, fought during the Hundred Days of Napoleon’s dramatic return from exile on Elba. It brought the Napoleonic Wars to a definitive end and settled permanently the question of whether Napoleon could restore his empire against the united will of the major European powers.
Battle of Waterloo – Background and the Waterloo Campaign
The Battle of Waterloo did not occur in isolation but was the climax of a brief but intense campaign that began when Napoleon crossed into Belgium on June 15th, 1815. His strategic plan was to strike before the allied powers could fully concentrate their forces against him, driving between the two nearest allied armies, Wellington’s British-led force and Blucher’s Prussians, and defeating them separately before they could combine.
The campaign opened promisingly for Napoleon. On June 16th, 1815, he personally defeated Blucher’s Prussian army at the Battle of Ligny, inflicting significant casualties and forcing the Prussians to retreat northward. At the same time, Marshal Ney fought a costly and inconclusive engagement against Wellington’s forces at Quatre-Bras, failing to prevent the British from holding their position. Napoleon detached Marshal Grouchy with approximately 33,000 men to pursue the Prussians and prevent them from rejoining Wellington, while he turned his main force toward Wellington’s army.
On the evening of June 17th, Wellington withdrew to a prepared defensive position on a ridge south of the village of Waterloo, a position he had identified earlier as offering favorable ground in case of a battle. The ridge at Mont-Saint-Jean gave his infantry the ability to shelter on the reverse slope away from French artillery, while several strong points in front of the main line, including the fortified farmhouses at Hougoumont on the western flank and La Haye Sainte in the center, could serve as anchors for the defense.
Napoleon arrived in front of Wellington’s position on the evening of June 17th and decided to wait until the following morning to attack. He delayed the start of the battle further on June 18th, waiting until approximately eleven o’clock in the morning for the wet ground to dry sufficiently for his artillery and cavalry to maneuver effectively. This delay, for which he has been heavily criticized by historians, cost several critical hours that ultimately allowed Blucher’s Prussians, who had evaded Grouchy’s pursuit, to march to Waterloo and join the battle by late afternoon.
Battle of Waterloo – Wellington’s Defense
Wellington was one of the finest defensive commanders in military history, and his handling of the allied army at Waterloo was a masterpiece of that art. He positioned his infantry largely on the reverse slope of the ridge, sheltering them from French artillery fire while remaining ready to move forward to meet any assault. He anchored his flanks carefully and reinforced the fortified farmhouses at Hougoumont and La Haye Sainte as forward positions that would complicate any French attack on his main line.
Wellington understood that his principal strategic task was to hold his position long enough for the Prussians to arrive and attack Napoleon’s flank. He famously summed up the strategic situation that day by saying he wished it were night or that the Prussians would come. This required him to absorb enormous punishment from Napoleon’s attacks without yielding, a task that tested his army to its limits.
The fighting around Hougoumont on Wellington’s right flank began in the late morning and continued throughout the day. Napoleon intended the attack on Hougoumont as a diversion to draw Wellington’s reserves southward before the main assault on the center. Instead, the stubborn defense of the farmhouse by a small garrison of British Guards drew in increasingly large numbers of French attackers, consuming significant French forces in a fight that was never resolved. The garrison held Hougoumont throughout the entire battle.
Battle of Waterloo – Napoleon’s Attacks
Napoleon launched his main assault on Wellington’s center in the early afternoon. A massive French artillery bombardment preceded the infantry attack, though its effect was reduced by Wellington’s use of the reverse slope to shelter his troops. French infantry under Marshal d’Erlon advanced on the allied center in large dense columns, a formation that offered strength but vulnerability to defensive firepower. The attack pressed the allied line hard and broke through at several points, but determined counterattacks, including a famous charge by the Scots Greys and Union Brigade of heavy cavalry, drove the French back with heavy losses.
The next phase of the battle saw Napoleon commit his cavalry in a series of massive charges against Wellington’s infantry squares. Squares were the standard formation for infantry defending against cavalry, a hollow rectangle of men presenting bayonets on all sides, and they were difficult to break if well-formed and steady. Marshal Ney led repeated cavalry charges against the allied squares throughout the afternoon, in what became one of the most dramatic episodes of the battle. The allied infantry held their squares with remarkable steadiness under intense pressure, and Ney’s cavalry suffered enormous losses without breaking the allied line. Wellington later described the battle as the nearest-run thing you ever saw in your life.
At approximately six o’clock in the evening, French forces finally captured the farmhouse of La Haye Sainte in the center of the allied line, giving Napoleon’s artillery a forward position from which to pound the weakened allied center at close range. At this critical moment Napoleon might have broken Wellington’s line with a determined infantry assault. However, Prussian forces had been arriving on Napoleon’s eastern flank in increasing numbers throughout the afternoon, forcing Napoleon to commit more and more of his reserves to deal with this new threat. He had insufficient fresh troops to exploit the capture of La Haye Sainte effectively.
Battle of Waterloo – The Imperial Guard and the French Collapse
Napoleon’s final attempt to break Wellington’s line came in the early evening, when he launched his Imperial Guard, his elite reserve force, in a frontal assault on the allied center. The Guard had never been defeated in Napoleon’s lifetime and its advance was watched with dread by the allied soldiers who faced it. However, Wellington had concealed a fresh brigade of Guards infantry in the dead ground behind the ridge, and as the French Imperial Guard crested the ridge it was struck by a devastating close-range volley from men it had not known were there.
The Imperial Guard halted, wavered, and then broke, an event so unprecedented in the experience of the French army that it caused immediate panic among the French troops who witnessed it. The cry went up that the Guard was retreating, and within minutes the carefully managed French retreat became a headlong rout. Wellington ordered a general advance, and the entire allied line moved forward at the moment of French collapse. Blucher’s Prussians, now arriving in force, joined the pursuit. The French army disintegrated, abandoning its guns, supplies, and equipment as it fled south. Napoleon himself was swept along in the retreat and only narrowly avoided capture.
Battle of Waterloo – Casualties and Aftermath
French casualties at Waterloo amounted to approximately 25,000 killed and wounded, with a further 8,000 to 9,000 taken prisoner. Wellington’s allied force suffered around 15,000 casualties and Blucher’s Prussians approximately 8,000, for a combined allied total of around 23,000. The losses on both sides were severe, but the completeness of the French defeat was total. The army that marched into Belgium with Napoleon four days earlier had ceased to exist as a fighting force.
Napoleon returned to Paris on June 21st, 1815, hoping to find political support for continuing the fight. He found instead that the legislative chambers were moving to depose him and that his marshals refused to commit the remnants of the army to further resistance. He abdicated for the second time on June 22nd, 1815. Coalition forces entered Paris on July 7th and Louis XVIII was restored to the French throne the following day. Napoleon made a brief attempt to escape to the Americas but was blockaded by the Royal Navy and ultimately surrendered to the British on July 15th, 1815. He was exiled to Saint Helena, where he died on May 5th, 1821.
Battle of Waterloo – Significance
The significance of the Battle of Waterloo in the history of the modern world is considerable. As a military event it was the final engagement of the Napoleonic Wars, ending more than two decades of recurrent conflict that had killed millions of people and reshaped the political map of Europe. The decisiveness of the outcome ensured that there would be no third return from exile, no further attempt to revive the French Empire.
Waterloo also marked the beginning of a prolonged period of relative peace among the major European powers, made possible by the settlement of the Congress of Vienna and the Concert of Europe that followed. The century between Waterloo and the outbreak of the First World War in 1914 was, by the standards of what had come before and what would come after, a period of remarkable stability, and Waterloo played a significant role in creating the conditions for that stability.
The battle’s fame has transcended its military significance to become part of the common cultural vocabulary of the English-speaking world. Wellington’s description of it as the nearest-run thing you ever saw in your life is one of the most quoted remarks in military history. The expression meeting one’s Waterloo, meaning suffering a decisive and final defeat, has passed into everyday language as a permanent reminder of the battle’s place in the historical imagination. As such, the Battle of Waterloo stands as one of the most consequential and celebrated military engagements in the history of the modern world, a battle that ended an era and shaped the course of European and world history for a century to come.
