The Battle of Gravelotte (or Battle of GravelotteSt. Privat) on 18 August 1870 was the largest battle of the Franco-Prussian War. Named after Gravelotte, a village in Lorraine, it was fought about 6 miles (9.7 km) west of Metz, where on the previous day, having intercepted the French army's retreat to the west at the Battle of Mars-La-Tour, the Prussians were now closing in to complete the destruction of the French forces.

The combined German forces under King Wilhelm I were the Prussian First and Second Armies of the North German Confederation with 210 infantry battalions, 133 cavalry squadrons, and 732 heavy cannons totaling 188,332 officers and men. The French Army of the Rhine, commanded by Marshal Franois Achille Bazaine, dug in along high ground with their southern left flank at the town of Rozerieulles, and their northern right flank at St. Privat.

On 18 August, the Prussian First Army under General Karl Friedrich von Steinmetz launched its VII and VIII Corps in repeated assaults against the French positions, backed by artillery and cavalry support. All attacks failed with enormous casualties in the face of French infantry and mitrailleuse firepower. The French did not counter-attack Steinmetz's weakened army. On the Prussian left, the Prussian Guards attacked the French position at St. Privat at 16:50 hours. With the support of the Prussian II and Saxon XII Corps of Prince Friedrich Karl's Second Army, the Guards conquered St. Privat by 20:00 hours after heavy losses, pushing back the French right wing.

Bazaine's Army of the Rhine withdrew into Metz fortress on the morning of 19 August. The German victory at Gravelotte ended Bazaine's army's last chance of retreating west to Verdun. After a siege lasting over two months, the Army of the Rhine surrendered on 27 October 1870.



The Franco-Prussian War or Franco-German War, often referred to in France as the War of 1870, was a conflict between the Second French Empire and the North German Confederation led by the Kingdom of Prussia. Lasting from 19 July 1870 to 28 January 1871, the conflict was caused primarily by France's determination to reassert its dominant position in continental Europe, which appeared in question following the decisive Prussian victory over Austria in 1866. According to some historians, Prussian chancellor Otto von Bismarck deliberately provoked the French into declaring war on Prussia in order to induce four independent southern German states—Baden, Württemberg, Bavaria and Hesse-Darmstadt—to join the North German Confederation; other historians contend that Bismarck exploited the circumstances as they unfolded. All agree that Bismarck recognized the potential for new German alliances, given the situation as a whole.France mobilised its army on 15 July 1870, leading the North German Confederation to respond with its own mobilisation later that day. On 16 July 1870, the French parliament voted to declare war on Prussia; France invaded German territory on 2 August. The German coalition mobilised its troops much more effectively than the French and invaded northeastern France on 4 August. German forces were superior in numbers, training, and leadership and made more effective use of modern technology, particularly railways and artillery.

A series of swift Prussian and German victories in eastern France, culminating in the Siege of Metz and the Battle of Sedan, resulted in the French Emperor Napoleon III captured and the army of the Second Empire decisively defeated; a Government of National Defense was formed in Paris on 4 September and continued the war for another five months. German forces fought and defeated new French armies in northern France, then besieged Paris for over four months, before it fell on 28 January 1871, effectively ending the war.

In the waning days of the war, with German victory all but assured, the German states proclaimed their union as the German Empire under the Prussian king Wilhelm I and Chancellor Bismarck; with the notable exception of Austria, the vast majority of Germans were united under a nation-state for the first time in history. Following an armistice with France, the Treaty of Frankfurt was signed on 10 May 1871, giving Germany billions of francs in war indemnity, as well as most of Alsace and parts of Lorraine, which became the Imperial Territory of Alsace-Lorraine (Reichsland Elsaß-Lothringen).

The war had a lasting impact on Europe. By hastening the process of German unification, it significantly altered the balance of power on the continent; with the new German nation state supplanting France as the dominant European land power. Bismarck maintained great authority in international affairs for two decades, developing a reputation for adept and pragmatic diplomacy that raised Germany's global stature and influence. In France, it brought a final end to imperial rule and began the first lasting republican government. Resentment over France's defeat triggered a revolutionary uprising called the Paris Commune, which managed to seize and hold power for two months before its bloody suppression; the event would influence the politics and policies of the Third Republic.