The Telegram Bismarck Rewrote

The Franco-Prussian War was a war Bismarck chose, engineered, and ignited with a piece of creative editing. The proximate cause — the Spanish succession crisis — was real enough: Spain's empty throne had been offered to a Hohenzollern prince, and France objected on the grounds that a Hohenzollern king in Madrid as well as Berlin would encircle France in a German dynastic vice. The French objection was reasonable; King Wilhelm I of Prussia agreed, and the Hohenzollern candidacy was withdrawn. It should have ended there.

But Bismarck needed a war. The North German Confederation he had built after the Austro-Prussian War of 1866 left the south German states — Bavaria, Württemberg, Baden — outside the Prussian orbit, bound by military treaties but not yet part of a unified Germany. He knew, from his study of south German opinion, that only a war with France would trigger the nationalist sentiment needed to bring them in voluntarily. He needed France to be the aggressor, so that German unity could be presented as defensive solidarity rather than Prussian conquest.

The French obliged. The French foreign minister demanded not just the withdrawal of the candidacy but a formal Prussian promise never to support such a candidacy again — an insult to Prussian dignity that King Wilhelm, taking the waters at Bad Ems, declined to give. Wilhelm sent a telegram to Bismarck in Berlin describing the conversation with the French ambassador in polite, measured terms. Bismarck read it at dinner with Moltke and War Minister Roon. He asked Moltke: if war came, were the armies ready? Moltke said yes. Bismarck took the telegram, edited a few sentences, and published the abbreviated version to all the major newspapers. The published version made it appear that the French ambassador had been dismissed with deliberate discourtesy — an insult to French honor. France declared war on July 19, 1870.

Moltke, reading the published Ems Dispatch, said it had 'the sound of a flourish in answer to a challenge.' He was right. The south German states, as Bismarck predicted, rallied immediately. Bavaria, Württemberg, and Baden mobilized alongside Prussia. What Bismarck had engineered as a trap for France had become the founding act of German national unity — all from a telegram he had edited at dinner.