The Battle of Beaumont on August 30, 1870 was won by Prussia

Prussia

Prussia was a German kingdom and historic state originating out of the Duchy of Prussia and the Margraviate of Brandenburg. For centuries, the House of Hohenzollern ruled Prussia, successfully expanding its size by way of an unusually well-organized and effective army. Prussia shaped the history...

 during the Franco-Prussian War

Franco-Prussian War

The Franco-Prussian War or Franco-German War, often referred to in France as the 1870 War was a conflict between the Second French Empire and the Kingdom of Prussia. Prussia was aided by the North German Confederation, of which it was a member, and the South German states of Baden, Württemberg and...

.

It was fought between Fifth French Corps d'Armee under General Pierre Louis Charles de Failly

Pierre Louis Charles de Failly

Pierre-Louis Charles de Failly was a French general.The son of Count Charles-Louis de Failly , and of Sophie Desmons de Maigneux, he was educated at the Saint-Cyr and entered the army in 1828.In 1851 he had risen to the rank of colonel, and Napoleon...

, and the IV and XII (Royal Saxon) Army Corps under Prince George of Saxony

George of Saxony

-Life:George was born in the Saxon capital Dresden. He was the second son of King John of Saxony and his wife Princess Amelia of Bavaria , daughter of King Maximilian I Joseph of Bavaria ....

 (the XII Army Corps was all-Saxon, while the IV Army Corps was a mix of regiments from Anhalt

Anhalt

Anhalt was a sovereign county in Germany, located between the Harz Mountains and the river Elbe in Middle Germany. It now forms part of the state of Saxony-Anhalt.- Dukes of Anhalt :...

, Prussian Saxony and the Thuringian states

Thuringia

The Free State of Thuringia is a state of Germany, located in the central part of the country.It has an area of and 2.29 million inhabitants, making it the sixth smallest by area and the fifth smallest by population of Germany's sixteen states....

). The French were surprised in their cantonment

Cantonment

A cantonment is a temporary or semi-permanent military or police quarters. The word cantonment is derived from the French word canton meaning corner or district, as is the name of the Cantons of Switzerland. In South Asia, the term cantonment also describes permanent military stations...

s and driven back upon Monzon, with losses of 4,800 men and 42 guns to the Germans' 3,500.