Revanchism was born of France's bitterness over Alsace-Lorraine
After losing Alsace and Lorraine to Prussia, French nationalists of the 1870s nursed a craving for revenge, or revanche, so intense it got its own word. That grudge shaped alliances, fed a would-be strongman nicknamed General Revenge, and ended with Germany signing the Versailles treaty in the very room where its empire was proclaimed.
Revanchism means a policy aimed at undoing earlier defeats, usually by recovering lost territory. It feeds on patriotism and the wish for retribution, often with economic or strategic motives, and its hardliners tend to argue that another war could win back what the last one took. It overlaps with irredentism, the belief that part of a nation remains unredeemed beyond its borders, and typically leans on ethnic nationalism and claims of occupation since time immemorial.
The French case set the template. Defeat in the Franco-Prussian War left deep resentment toward Germany, and paintings dwelling on the humiliation, such as those of Alphonse de Neuville, sold well. Georges Clemenceau of the Radical Republicans argued against colonial ventures that might distract from the blue line of the Vosges, the lost frontier. When Jules Ferry's governments chased colonies in the early 1880s, Clemenceau backed Georges Boulanger, the popular soldier dubbed Général Revanche, who some feared might topple the Republic in 1889.
The mood steered French diplomacy for decades. Wooing the Russian Empire produced the Franco-Russian Alliance of 1894 and, through later accords, the Triple Entente with Britain that fought the First World War. The 1919 Treaty of Versailles returned Alsace-Lorraine to France and imposed reparations; the peace conference opened on the anniversary of the German Empire's proclamation, and the new German government had to sign in the same Hall of Mirrors.
Revenge begets revenge. In the Weimar Republic a German revanchist movement demanded Alsace-Lorraine, the Polish Corridor and the Sudetenland, claims Adolf Hitler took up and pursued into the invasion of Poland that began the Second World War. Older examples show the idea does not always turn violent: after losing Finland to Russia in the war of 1808 to 1809, ending almost 600 years of rule, Sweden talked of recovering it through much of the 1800s but never seriously tried.
Source: Revanchism
