The Dreyfus affair begins in France, when Alfred Dreyfus is wrongly convicted of treason.

The Dreyfus Affair was a major political and social crisis that shook France at the end of the 19th century, exposing deep divisions within the country. It began in 1894 when Alfred Dreyfus, a Jewish artillery officer in the French army, was falsely accused of passing military secrets to Germany. Based on flimsy evidence and blatant antisemitic assumptions, Dreyfus was convicted of treason, publicly humiliated, stripped of his rank, and sentenced to life imprisonment on Devil’s Island. At the time, much of the public accepted the verdict, trusting the authority of the military and viewing Dreyfus through the lens of widespread prejudice.

As doubts about the conviction grew, it became clear that the case was riddled with forged documents, secret files, and deliberate cover-ups by senior military officials. Evidence later showed that another officer, Ferdinand Walsin Esterhazy, was the real spy, but the army chose to protect its reputation rather than admit error. This transformed the affair from a miscarriage of justice into a national scandal. French society split into two camps: the Dreyfusards, who demanded truth and justice, and the anti-Dreyfusards, who defended the army, nationalism, and traditional authority at all costs.

The turning point came in 1898 when the writer Émile Zola published his famous open letter J’accuse…! accusing the government and military of knowingly condemning an innocent man. The article electrified public opinion and brought the affair to international attention, but it also came at great personal cost to Zola, who was prosecuted and forced into exile. His intervention highlighted the growing power of intellectuals in political life and framed the affair as a moral struggle between justice and institutional corruption.

Ultimately, the Dreyfus Affair had lasting consequences for France. Dreyfus was finally exonerated in 1906 and reinstated in the army, but the damage had already been done. The affair intensified debates over antisemitism, the role of the military, and the meaning of republican values under the Third French Republic. It strengthened the principles of civil rights, secularism, and the rule of law, while also serving as a warning of how fear, prejudice, and blind loyalty to institutions can undermine justice—even in a democratic society.