How a coalition of rivals finally cornered Napoleon and forced his first abdication
The War of the Sixth Coalition saw a fractured alliance of European powers unite to dismantle the First French Empire. Following Napoleon's disastrous 1812 Russian campaign, his enemies leveraged superior manpower and a strategic plan to wear him down, eventually forcing the Emperor into exile on the island of Elba.
The conflict began in the wake of the Grande Armée's catastrophic retreat from Moscow, where Napoleon lost at least 370,000 men to combat, starvation, and extreme winter conditions. By early 1813, the political landscape shifted as Prussia, previously compelled to support France, signed the Convention of Tauroggen and later the Treaty of Kalisch to join the Allies. Austria, initially an armed neutral, eventually declared war in August 1813 after Napoleon rejected peace terms that would have dismantled his Confederation of the Rhine.
A pivotal moment in the war was the development of the Trachenberg Plan, authored by Sweden's Crown Prince Carl Johan—formerly French Marshal Bernadotte—and Austrian Field-Marshal Lieutenant Joseph Radetzky. Recognizing Napoleon's tactical brilliance, the Allies adopted a Fabian strategy: they avoided direct confrontation with the Emperor himself, instead focusing on engaging and defeating his marshals. This approach allowed the coalition to slowly encircle the French forces with three independent armies, eventually bringing them to a decisive clash at Leipzig in 1813, the largest battle in Europe until World War II.
Napoleon's efforts to regain the initiative were hampered by a chronic lack of horses for his cavalry, which prevented him from turning tactical victories, such as those at Dresden, into decisive strategic outcomes. Despite his ability to reorganize and strike back during the 1814 campaign in France, the sheer weight of the Allied numbers and the exhaustion of his conscript-heavy army proved insurmountable. Following the occupation of Paris by Allied forces, Napoleon was compelled to abdicate in April 1814. Although he briefly returned to power during the Hundred Days in 1815, his final defeat at Waterloo marked the definitive end of the Napoleonic Wars.
The war was not merely a military struggle but a complex diplomatic feat. Britain provided crucial subsidies to the Russian and Iberian war efforts, while the Swedish-led Army of the North consistently frustrated French attempts to knock Prussia out of the conflict. By the time the Allies marched on Paris, they had successfully transformed from a collection of disparate, often competing interests into a unified force capable of ending Napoleon's dominance.
Source: War of the Sixth Coalition
