The Battle of Austerlitz (Czech: Bitva u Slavkova) also known as the Battle of the Three Emperors, was one of Napoleon's greatest victories, effectively destroying the Third Coalition against the French Empire. On December 2, 1805 (November 20, Old Style), a French army, commanded by Emperor Napoleon I, decisively defeated a Russo-Austrian army, commanded by Tsar Alexander I, after nearly nine hours of difficult fighting. The battle took place at Austerlitz (Slavkov u Brna) about 20 km (12 miles) east of Brno in Moravia. The battle is often regarded as a tactical masterpiece.
The French victory at Austerlitz effectively brought the Third Coalition to an end. On December 26, 1805, Austria and France signed the Treaty of Pressburg, which took the former out of the war, reinforced the earlier treaties of Campo Formio and Lunéville, made Austria cede land to Napoleon's German allies, and imposed an indemnity of 40 million francs on the defeated Habsburgs. Russian troops were allowed to head back to home soil. Victory at Austerlitz also permitted the creation of the Confederation of the Rhine, a collection of German states intended as a buffer zone between France and the rest of Europe. In 1806, the Holy Roman Empire ceased to exist when Holy Roman Emperor Francis II kept Francis I of Austria as his only official title. These achievements, however, did not establish a lasting peace on the continent. Prussian worries about growing French influence in Central Europe sparked the War of the Fourth Coalition in 1806.
Napoleon could muster some 75,000 men and 157 guns for the impending battle, but about 7,000 troops under Davout were still far to the south in the direction of Vienna. The Allies had about 73,000 soldiers, seventy percent of them Russian, and 318 guns.
Battlefield
The northern part of the battlefield was dominated by the 700-foot (210-meter) Santon hill and the 850-foot (260-meter) Zuran hill, both overlooking the vital Olmutz-Brno road that ran across a west-east axis. To the west of these two hills was the village of Bellowitz, and between them the Bosenitz Stream went south to link up with the Goldbach Stream, the latter flowing astride the villages of Kobelnitz, Sokolnitz, and Telnitz. The centerpiece of the entire area were the Pratzen Heights, a gently sloped hill about 35 to 40 feet (11–12 m) in height. An aide noted that the Emperor repeatedly told his Marshals, "Gentlemen, examine this ground carefully, it is going to be a battlefield; you will have a part to play upon it".
Allied plans and dispositions
An Allied council met on December 1 to discuss proposals for the battle. Most of the Allied strategists had two fundamental ideas in mind: making contact with the enemy and securing the southern flank that led to Vienna. Although the Tsar and his immediate entourage pushed hard for a battle, Emperor Francis of Austria was in a more cautious mood, and he was seconded by Kutuzov, the main Russian commander. The pressure to fight from the Russian nobles and the Austrian commanders, however, was too strong, and the Allies adopted Austrian Chief of Staff Franz von Weyrother's plan. This called for a main drive against the French right flank, which the Allies noticed was lightly guarded, and diversionary attacks against the French left. The Allies deployed most of their troops into four columns that would attack the French right. The Russian Imperial Guard was held in reserve while Russian troops under Bagration guarded the Allied right.
French plans and dispositions
Days before any actual fighting, Napoleon had given an impression to the Allies that his army was in a weak state and that he desired a negotiated peace. In reality, he was hoping that they would attack, and to encourage them on this mission he deliberately weakened his right flank. On November 28, Napoleon met with his marshals at Imperial Headquarters and they informed him of their qualms and fears about the upcoming battle, even suggesting a retreat, but he shrugged off their complaints and went to work. Napoleon's plan envisioned that the Allies would throw so many troops to envelop his right flank that their center would be severely weakened. He then counted on a massive French thrust, to be conducted by 16,000 troops of Soult's IV Corps, through the center to cripple the Allied army. Meanwhile, to support his weak right flank, Napoleon ordered Davout's III Corps to force march all the way from Vienna and join General Legrand's men, who held the extreme southern flank that would bear the heavy part of the Allied attack. Davout's soldiers had 48 hours to march 110 km (70 miles). Their arrival would be extremely crucial in determining the success or failure of the French plan. The Imperial Guard and Bernadotte's I Corps were held in reserve while the V Corps under Lannes guarded the northern sector of the battle.
Battle is joined
The battle began around 8 AM with the first allied column attacking the village of Telnitz, which was defended by the 3rd Line Regiment. This sector of the battlefield witnessed heavy action in the following moments as several ferocious Allied charges evicted the French from the town and forced them on the other side of the Goldbach. The first men of Davout’s corps arrived at this time and threw the Allies out of Telnitz before they too were attacked by hussars and re-abandoned the town. Additional Allied attacks out of Telnitz were checked by French artillery.
Allied columns started pouring against the French right, but not at the desired speed, so the French were mostly successful in curbing the attacks. In actuality, the Allied deployments were mistaken and poorly timed: cavalry detachments under Liechtenstein on the Allied left flank had to be placed in the right flank and in the process they ran into and slowed down part of the second column of infantry that was advancing towards the French right.[24] At the time, the planners thought this was a disaster, but later on it helped the Allies. Meanwhile, the lead elements of the second column were attacking the village of Sokolnitz, which was defended by the 26th Light Regiment and the Tirailleurs, French skirmishers. Initial Allied assaults proved unsuccessful and General Langeron ordered the bombardment of the village. This deadly barrage forced the French out, and around the same time, the third column attacked the castle of Sokolnitz. The French, however, counterattacked and regained the village, only to be thrown out again. Conflict in this area ended momentarily when Friant's division (part of III Corps) retook the village. Sokolnitz was perhaps the most fought over area in the battlefield and would change hands several times as the day progressed.
"One sharp blow and the war is over"
Around 8:45 AM, finally satisfied at the weakness in the enemy center, Napoleon asked Soult how long it would take for his men to reach the Pratzen Heights, to which the Marshal replied, “Less than twenty minutes sire.†About 15 minutes later, Napoleon ordered the attack, adding, “One sharp blow and the war is over.â€
A dense fog helped to cloud the advance of St. Hilaire’s division, but as they went up the slope the legendary ‘Sun of Austerlitz’ ripped the mist apart and encouraged them forward. Russian soldiers and commanders on top of the heights were stunned to see so many French troops coming towards them. Allied commanders were now able to feed some of the delayed detachments of the fourth column into this bitter struggle. Over an hour of horrendous fighting left much of this unit decimated beyond recognition. The other men from the second column, mostly inexperienced Austrians, also participated in the struggle and swung the numbers game against one of the best fighting forces in the French army, finally forcing them to withdraw down the slopes. However, gripped by desperation, St. Hilaire's men struck hard once more and bayoneted the Allies out of the heights. To the north, General Vandamme’s division attacked an area called Staré Vinohrady and through talented skirmishing and deadly volleys broke several Allied battalions.
The battle had firmly turned to France’s favor, but there was still much fighting ahead. Napoleon ordered Bernadotte’s I Corps to support Vandamme’s left and moved his own command center from Zuran Hill to St. Anthony’s Chapel on the Pratzen Heights. The difficult position of the Allies was confirmed by the decision to send in the Russian Imperial Guard; Grand Duke Constantine, Tsar Alexander’s brother, commanded the Guard and counterattacked in Vandamme’s section of the field, forcing a bloody effort and the loss of the only French standard in the battle (the unfortunate victim was a battalion of the 4th Line Regiment). Sensing trouble, Napoleon ordered his own heavy Guard cavalry forward. These men pulverized their Russian counterparts, but with both sides pouring in large masses of cavalry no victor was clear yet. The Russians had a numerical advantage here but fairly soon the tide swung as Drouet’s Division, the 2nd of Bernadotte’s I Corps, deployed on the flank of the action and allowed French cavalry to seek refuge behind their lines. The horse artillery of the Guard also unlimbered a deadly toll on the Russian cavalry and fusiliers. The Russians broke and many died as they were pursued by the reinvigorated French cavalry for about a quarter of a mile.
Meanwhile, the northernmost part of the battlefield was also witnessing heavy fighting. Prince Liechtenstein’s heavy cavalry began to assault Kellerman’s lighter cavalry forces after finally arriving at the correct position in the field. The fighting originally went well for the French, but Kellerman’s forces took cover behind General Caffarelli’s infantry division once it became clear Russian numbers were too great. Caffarelli’s men halted the Russian assaults and permitted Murat to send two cuirassier divisions into the fray to finish off the Russian cavalry for good. The ensuing melee was bitter and long, but the French ultimately prevailed. Lannes then led his V Corps against Bagration’s men and after hard fighting managed to drive the skilled Russian commander off the field. He wanted to pursue, but Murat, who was in control of this sector in the battlefield, was against the idea.
Napoleon’s focus now shifted towards the southern end of the battlefield where the French and the Allies were still fighting over Sokolnitz and Telnitz. In an effective double-pronged assault, St. Hilaire’s division and part of Davout’s III Corps smashed through the enemy at Sokolnitz and persuaded the commanders of the first two columns, Generals Kienmayer and Langeron, to flee as fast as they could. Buxhowden, the commander of the Allied left and the man responsible for leading the attack, was completely drunk and fled as well. Kienmayer covered his withdrawal with the O’Reilly light cavalry, who gallantly managed to defeat five of six French cavalry regiments before they too had to retreat.
General panic now seized the Allied army and it abandoned the field in any and all possible directions. A famous yet frightful episode transpired during this retreat: Russian forces that had been defeated by the French right withdrew south towards Vienna via the Satschan frozen ponds. French artillery pounded towards the men, but Napoleon redirected his gunners to fire at the ice. The men drowned in the viciously cold ponds, dozens of artillery pieces going down along with them. Estimates on how many guns were captured differ; there may have been as low as 38 and as high as over 100. Sources also differ on casualties, with figures ranging from as low as 200 to as high as 2,000 dead. Because Napoleon exaggerated this incident in his report of the battle, the low numbers may be more accurate, although doubt remains as to whether they are fully correct. Many regard this incident as one of Napoleon's cruelest acts in war.