Battle of Waterloo

The Battle of Waterloo was a decisive engagement fought on 18 June 1815 between the French army under the command of Napoleon Bonaparte and the Seventh Coalition forces composed of Britain, Prussia, the Netherlands and other European powers. It is historically recognized as the final major battle of the Napoleonic Wars (1803–1815). The battle took place near the town of Waterloo in present-day Belgium, accelerating the collapse of the French Empire and definitively ending Napoleon’s political career.

Napoleon returned from exile on the island of Elba on 1 March 1815, initiating a brief but critical period of rule known as the Hundred Days. The major powers of Europe viewed this development as a threat and declared Napoleon an enemy of peace, uniting once again to remove him permanently. Napoleon’s strategy was based on defeating the British army before it could join forces with the Prussians, thereby breaking the Coalition and securing victory.

Battlefield (Generated by artificial intelligence.)

One of the opposing sides at Waterloo was the Anglo-Dutch army under the command of the Duke of Wellington; the other was the Prussian forces led by General (Prince) Blücher. The French army came very close to victory during critical moments of the battle, particularly in the fighting around the La Haye Sainte farm, where they pressured the Coalition lines. However, the timely arrival of Prussian troops and the failure of the final assault by the French Imperial Guard changed the course of the battle.

Napoleon abdicated for the second time four days after his defeat at Waterloo and was exiled to the island of Saint Helena in the Atlantic Ocean. This battle not only marked the end of Napoleon but also opened the door to a prolonged period of relative peace in Europe. The Battle of Waterloo is regarded as one of the turning points in modern European history.

Pre-Battle Situation

Napoleon Bonaparte had abdicated on 6 April 1814 following the Sixth Coalition Wars and was exiled to the island of Elba. However, on 1 March 1815, he escaped from Elba with only a few hundred soldiers and landed near Cannes in southern France. This event, combined with rapid popular and military support in France, enabled Napoleon to reach the capital Paris within just twenty days and reclaim power on 20 March 1815. This period is known in history as the Hundred Days (Les Cent-Jours).

Napoleon’s return triggered widespread alarm across Europe. On 13 March 1815, while Napoleon was still en route to Paris, the Congress of Vienna declared him an enemy of the people, and all European states agreed on armed intervention to depose him. The Seventh Coalition, formed on 25 March 1815, included the United Kingdom, Prussia, Austria and Russia. Their plan envisioned five separate armies entering France simultaneously to disperse Napoleon’s military capacity without a single large battle. However, implementation of this plan took time. Only two Coalition armies—the Anglo-Dutch-German force under Wellington and the Prussian army under Prince Blücher—were positioned in Belgium by June 1815. Austrian and Russian armies had not yet reached their deployment positions. This situation granted Napoleon a significant strategic advantage: he aimed to defeat each Coalition army separately before they could unite.

Three Commanders: Duke Arthur Wellesley of Wellington – Napoleon Bonaparte – Prince Blücher (Generated by artificial intelligence.)

Napoleon began assembling a force of approximately 125,000 men under the name “Armée du Nord” (Northern Army) on 6 June 1815. This army consisted of about 89,000 infantry, 22,000 cavalry and 11,000 artillerymen. Within a week, units arriving from Lille, Metz and Paris were deployed along the Charleroi line, targeting the communication route between the Prussian and British armies. On the morning of 15 June, French troops crossed the border into Belgian territory, initiating the sequence of events that led to the Battle of Waterloo through the battles of Ligny and Quatre-Bras.

Napoleon’s operational plan aimed to defeat the Prussian army under General Blücher first, then the Anglo-Dutch forces under Duke Wellington, thereby breaking the Coalition. However, logistical setbacks and the faster-than-expected coordination of the Coalition armies prevented the plan from being executed. Despite all these developments, Napoleon launched a decisive offensive at Waterloo on the morning of 18 June 1815.

Course of the Battle

The Battle of Waterloo took place on the morning of 18 June 1815 between the French army under Napoleon Bonaparte, the British and allied forces under Duke Wellington, and the Prussian army under Marshal Blücher. Napoleon deployed a large force including the Imperial Guard. In the ensuing hours, the British and Prussian forces achieved superiority through coordinated action against the French army. This combined offensive shattered the French lines and inflicted a heavy defeat on Napoleon. The Battle of Waterloo is recorded as the final major land engagement of the French Empire and marked the end of Napoleon’s political and military career.

Preparations and Beginning

The Battle of Waterloo commenced on the morning of 18 June 1815 with a heavy artillery bombardment launched by the French army under General Reille. This bombardment aimed to weaken the Allied defenses and create a breach in their front line. At the same time, Napoleon’s brother Jérôme Bonaparte obtained intelligence from a conversation between two British officers indicating that Marshal Blücher intended to reinforce Duke Wellington. This information initiated an important intelligence flow in the opening moments of the battle. However, Napoleon did not take this intelligence seriously and made no changes to his battle plan. The Emperor continued to underestimate Duke Wellington, and this strategic complacency contributed to errors made later in the day.

Initial Attacks

In the early hours of the battle, Napoleon’s artillery batteries and cavalry units launched several major assaults against the Allied lines. However, these initial moves failed to achieve significant success. The French sought to identify weaknesses in the enemy defenses by committing General d’Erlon’s I Corps to the front. Nevertheless, French advances encountered heavy artillery fire and determined British resistance, resulting in heavy casualties.

The Battle of Waterloo, Oil Painting by William Sadler, 1815 (World History)

The Allied defense effectively utilized the natural advantages of the terrain. British units were largely positioned on elevated and hilly ground, making French assaults more difficult. Napoleon’s cavalry units encountered spear defenses and were forced to retreat. Meanwhile, French divisions under General d’Erlon suffered heavy losses and were repulsed.

Hougoumont Farm and Initial Resistance

Hougoumont Farm played a critical role in Napoleon’s offensive plan. Located near the right flank of Duke Wellington’s defensive line, it was regarded by French command as a strategically vital objective. French troops under Prince Jerome Bonaparte began surrounding the farm in the early morning. However, the Hanoverian and Nassau divisions stationed in the area offered stronger resistance than expected.

This resistance disrupted French plans to capture the farm quickly and caused delays in Napoleon’s overall assault. Intense fighting continued around the farm throughout the day; despite repeated French attacks, the defense of Hougoumont held firm. Holding the farm became one of the most important factors in maintaining the stability of the British defensive line.

French Corps Weakening and Allied Resistance

By midday, French artillery sought to break Allied resistance through concentrated fire. However, heavy rainfall since the morning had softened the ground, preventing cannonballs from ricocheting and reducing their explosive effect. French infantry struggled to advance across the muddy terrain, leaving their assault lines disorganized and ineffective against the Allied defenses.

Map Showing the Battle Plan, 1816 (Library of Congress)

At around 3:00 p.m., Napoleon ordered General d’Erlon’s I Corps to attack the center of the Allied line. However, this assault failed to produce any decisive results. French divisions suffered heavy losses against British spear lines and artillery batteries and were forced to retreat. Duke Wellington assessed this weak French advance and launched a counterattack, tipping the balance of the front in favor of the Allies.

Prussian Reinforcements and the Turning Point

On 18 June 1815, around 1:30 p.m., Prussian troops under General Bülow began advancing toward the right flank of the French army. Despite being pursued by Marshal Grouchy, Marshal Blücher left one corps behind at Wavre and sent his main force of approximately 48,000 men to reinforce Wellington. As the Prussian threat became evident, Napoleon dispatched General Lobau’s force of about 7,000 men toward Plancenoit. However, as additional Prussian corps arrived in the afternoon, pressure on the French right flank intensified. These developments forced Napoleon to commit his reserve units piecemeal to the front, preventing him from focusing sufficient strength on attacks against the Anglo-Allied center.

Napoleon’s Final Assault

Napoleon aimed to deliver a decisive blow to the Allied center with one final effort. On the evening of 18 June 1815, the Imperial Guard advanced with a force of 4,000 men. This attack was vital for the French; however, the chaotic battlefield conditions allowed the Allies to treat it as an opportunity. The French force encountered fierce resistance and was repelled. The Allies succeeded in driving back Napoleon’s Imperial Guard, causing a collapse in French morale. This marked one of the battle’s decisive turning points. With the Prussians also breaking through the French defenses, the French were forced into retreat.

French Withdrawal

As Napoleon’s Imperial Guard retreated, the French army’s collapse, driven by morale loss, began. The combined efforts of the Prussian and British forces shattered French resistance. The French army suffered a massive rout, and the Napoleonic Empire came to an end. The French lost between 25,000 and 33,000 men, while the Allied side suffered approximately 24,000 casualties.

Oil Painting of the British 28th Regiment (World History)

Outcome and Consequences

The Battle of Waterloo ended on 18 June 1815 with the decisive defeat of the French army under Napoleon Bonaparte by British and Prussian forces. After the battle, the French army disintegrated, suffered heavy losses and was unable to withdraw in an orderly fashion. This defeat led to Napoleon’s second abdication, and he relinquished the throne on 22 June 1815. He subsequently surrendered to British forces and was exiled to the island of Saint Helena in the Atlantic Ocean, where he died in 1821.

The Battle of Waterloo brought an end to the Napoleonic Wars. The Bourbon monarchy was restored in France, and political boundaries across Europe were reorganized according to the decisions of the Congress of Vienna. Following the battle, a system of power balance among the great European powers was established, contributing to nearly four decades without a major war on the continent.