Traditionally thought to show the arrest of Gavrilo Princip (right), this photo is now believed by historians to depict an innocent bystander, Ferdinand Behr, on 28 June 1914.[31][32]

The wrong turn

A driver took a wrong turn in Sarajevo. Gavrilo Princip looked up, fired twice, and Archduke Franz Ferdinand—the heir to Austria‑Hungary—and his wife fell.

World War I: The Wrong Turn That Sparked a World War

Crowds on the streets in the aftermath of the anti-Serb riots in Sarajevo, 29 June 1914

From bullets to ultimatums

Austria‑Hungary blamed Serbia and issued an ultimatum. Mobilizations surged; Germany declared war on Russia and France; Britain entered after Germany invaded Belgium.

World War I: The Wrong Turn That Sparked a World War