# Battle of Laon

The Battle of Laon, fought on March 9–10, 1814, was a pivotal engagement during the waning months of the Napoleonic Wars.

## Prelude

Following his costly success at the Battle of Craonne, Napoleon sought to exploit the disarray within General Blücher’s Army of Silesia. Blücher had retreated to the fortified hilltop town of Laon, where he consolidated his forces, reinforced by Prussian and Russian contingents. Laon’s strategic significance lay in its role as a key road junction, dominating the terrain and offering natural defensive advantages. Napoleon, aware of the urgent need to halt Blücher’s advance toward Paris, assembled a smaller but determined French force, weakened by casualties and stretched supply lines. Despite his strategic acumen, Napoleon faced a formidable challenge: a well-prepared, numerically superior Allied force under an experienced and resolute commander.
The French approach to Laon was fraught with difficulties. Napoleon’s troops were exhausted from continuous campaigning, and logistical support was inadequate. On March 8, heavy fog concealed French movements as Napoleon divided his forces, aiming to outflank the Allies and exploit weaknesses in their defensive line. However, coordination suffered due to poor visibility and the delayed arrival of Marshal Marmont’s corps. Blücher, who had initially considered retreating, capitalized on these delays and ordered his troops to hold their positions. The Allies established a strong defensive line anchored by artillery on the heights of Laon, with villages such as Ardon and Semilly serving as forward bastions. Napoleon, undeterred by the odds, launched probing attacks, hoping to dislodge the Allied positions and force a decisive victory.

## Battlefield

The battlefield at Laon was strategically significant due to its natural advantages. The town sat atop a flat-topped hill rising over 100 meters above the surrounding countryside, providing excellent visibility and a commanding position for defensive operations. The area to the north was open and flat, ideal for large troop movements, while the southern approaches featured rough, wooded terrain, complicating offensive maneuvers. The villages of Ardon and Semilly, located at the base of the hill, served as strong defensive outposts for the Allied forces.
Blücher capitalized on Laon’s defensive potential by deploying his forces along the ridge, supported by an extensive network of artillery. The key roads converging at Laon made it a vital logistical hub, and its natural elevation gave the Allies a decisive advantage in both defense and observation. Napoleon’s forces, approaching from the south, faced significant obstacles in trying to dislodge the entrenched Prussian and Russian troops, as the terrain funneled their attacks into well-prepared kill zones.

## Preparations

Blücher now had about 90,000 troops and 176 guns. Friedrich Wilhelm Freiherr von Bülow's Prussian corps was assigned the defense of Laon itself. Blücher's western wing was covered by a Russian corps under Ferdinand von Wintzingerode while the eastern wing was defended by two Prussian corps under Generals Yorck and Kleist. Two Russian corps under Generals Langeron and Osten-Sacken stood in reserve. After Craonne, Napoleon had taken the bulk of his forces northeastwards towards Laon while detaching about 10,000 troops under Marmont to advance on Laon via the Berry-au-Bac road.

## Battle

The Battle of Laon began on the morning of March 9, 1814, with Napoleon Bonaparte's forces advancing to confront the Army of Silesia, commanded by Blücher. Following a series of defeats and withdrawals, Blücher had taken up a strong defensive position at Laon, a hilltop town with a commanding view of the surrounding landscape. The Allied army, which consisted primarily of Prussian and Russian forces, numbered about 90,000 troops, significantly outnumbering Napoleon's smaller force of approximately 30,000 to 39,000 men. Napoleon, despite the challenges posed by his weakened forces, was determined to halt Blücher’s progress toward Paris. He sought to use his tactical brilliance to exploit any weakness in the enemy's lines and strike decisively.
The French army, fatigued from previous engagements, struggled with supply and coordination issues, and this hampered Napoleon's ability to deploy his forces efficiently. The weather, too, played a role, with thick fog and difficult terrain slowing down the movement of the French troops. Napoleon’s strategy relied on splitting his forces, with the aim of outflanking the Allies and catching them off guard. Marshal Marmont’s 6th Corps was positioned on the right flank and tasked with engaging the enemy at Athies, while the rest of Napoleon’s army advanced toward the southern approaches of Laon. However, delays in Marmont’s arrival and the logistical difficulties caused confusion in the French plans, which Blücher was quick to exploit.
Blücher, sensing an opportunity, ordered his forces to prepare for an attack and used the fog to his advantage. He launched a surprise counteroffensive against Marmont’s isolated corps during the night of March 9. The French forces, unprepared for such an assault, were pushed back in disarray. The counterattack was a success, forcing Marmont’s corps into a hasty retreat and exposing a gap in the French lines. This unexpected setback for Napoleon disrupted his overall plan and gave Blücher’s forces a significant advantage. The night attack was crucial in the outcome of the battle, as it shattered the cohesion of the French forces and shifted the momentum toward the Allies.
The next morning, March 10, Napoleon attempted to regroup his forces and launch a fresh assault on the Allied positions. The French commander aimed to push through the southern and eastern sections of Laon, targeting the strong defensive positions that had been fortified with artillery. Despite some initial successes in breaking through the Allied skirmishers, the French were met with heavy resistance. The Allied artillery, positioned on the high ground, unleashed devastating fire on the French advancing troops, causing significant casualties. Napoleon’s forces struggled to make headway against the entrenched defensive lines, which were well-supported by the Prussian and Russian infantry.
As the day wore on, Napoleon realized that the battle was not progressing in his favor. His forces were suffering heavy losses, and the French attempts to outflank the Allied positions were repeatedly thwarted by Blücher’s resolute defense. The French could not break the Allied lines, and the casualties continued to mount. Napoleon's own tactical brilliance was not enough to overcome the disadvantages of being outnumbered, fatigued, and unable to fully coordinate his forces due to the delays and logistical challenges. Meanwhile, Blücher’s army, although also tired, was bolstered by its strong defensive position and superior numbers, allowing the Allies to absorb the French assaults and maintain their ground.
By the evening of March 10, it became clear that further fighting would only lead to more French casualties without a realistic chance of victory. Napoleon, understanding that the French were unlikely to achieve a breakthrough, ordered a withdrawal under the cover of darkness. The retreat was organized in a relatively orderly fashion, but the French had suffered significant losses. The total number of French casualties in the battle was estimated at around 6,000 men, including killed, wounded, and captured. On the Allied side, casualties numbered around 4,000, but they retained their position on the field and were able to continue their advance toward Paris.

## Aftermath

This setback did not by itself spell the end for Napoleon. Just a few days later, the French crushed an isolated enemy corps at Reims. Blücher's Army of Silesia remained inactive for a week after the victory. Nevertheless, the Allied stand had prevented Napoleon from driving them further north. The Allies were still in a position to advance on and take Paris, which they did at the end of March.