In December 1894, French artillery officer Captain Alfred Dreyfus — a 35-year-old Alsatian of Jewish descent — was wrongfully convicted of treason for allegedly communicating French military secrets to the German Embassy in Paris. The case began in September 1894, when French military intelligence recovered a torn, unsigned note (later called the “bordereau”) addressed to the German military attaché, describing confidential French artillery information. On 5 October 1894, Major du Paty de Clam compared the bordereau's handwriting to Dreyfus's and concluded he was its probable author, despite a dissenting expert opinion finding the writing inconsistent with disguise. Dreyfus was interrogated and arrested on 15 October 1894 after denying the accusation, and was imprisoned at Cherche-Midi prison in Paris. He was tried before a closed military court beginning 19 December 1894; seven judges convicted him unanimously on 22 December 1894, relying on the disputed handwriting comparison and on a secret dossier — containing some falsified documents — illegally submitted to the judges during their deliberations by order of the Minister of War, General Auguste Mercier. On 5 January 1895, Dreyfus was publicly stripped of rank in a degradation ceremony in Paris, then deported to solitary confinement on Devil's Island, French Guiana, arriving on 14 April 1895; he was held there for five years in harsh conditions, including extreme heat and inadequate food and medical care. On 6 September 1896, following a false report by a British newspaper that he had escaped, his guards began shackling him nightly for two months.
In March 1896, Lieutenant Colonel Georges Picquart, the army's newly appointed counter-espionage chief, intercepted an unsent telegram implicating a different officer, Major Ferdinand Walsin Esterhazy, in contact with the German military attaché, and found that Esterhazy's handwriting matched the bordereau used to convict Dreyfus. After reviewing the secret file used against Dreyfus, Picquart became convinced of his innocence; when he raised his findings, army leadership suppressed them and transferred him to Tunisia. On 1 November 1896, a deputy head of the army's Statistics Section fabricated a supporting document that was brought to the Minister of War, General Jean-Baptiste Billot, as genuine evidence against Dreyfus. Independently, Dreyfus's brother Mathieu traced the bordereau's handwriting to Esterhazy and, on 15 November 1897, filed a formal complaint against him, forcing the army to open an inquiry; ten days later, novelist Émile Zola published the first of three newspaper articles in Le Figaro taking up Dreyfus's cause. A military court nonetheless acquitted Esterhazy, and the army brought further charges against Dreyfus based on additional forged documents. Zola's subsequent open letter, “J'Accuse…!,” published in the newspaper L'Aurore, further mobilized public support for Dreyfus and divided French society into pro-Dreyfus “Dreyfusards” and opposing factions.
In 1899, Dreyfus was returned to France for a second court-martial, which again convicted him and imposed a ten-year sentence; he was pardoned and released shortly afterward. In 1906, Dreyfus was formally exonerated. He was reinstated as a major in the French Army, served throughout World War I, was promoted to lieutenant colonel, and died in 1935. The affair came to symbolize modern injustice in the Francophone world and remains one of the most notable examples of a miscarriage of justice and antisemitism in French history.
Key facts
- Victims
- On file
- Date
- 1894
- Location
- Paris, France
- Case status
- overturned
Case timeline
1894-09
French military intelligence recovers a torn, unsigned note (the "bordereau") addressed to the German military attaché, describing confidential French artillery information.
1894-10-05
Major du Paty de Clam compares the bordereau's handwriting to Dreyfus's and concludes he is its probable author, despite a dissenting expert opinion.
1894-10-15
Captain Alfred Dreyfus is interrogated and arrested on suspicion of writing the bordereau; he denies the accusation and is imprisoned at Cherche-Midi prison in Paris.
1894-10-29
News of Dreyfus's arrest is first published, in the antisemitic newspaper La Libre Parole, beginning an intense press campaign ahead of the trial.
1894-12-19
Dreyfus's court-martial opens before a closed military court in Paris.
1894-12-22
Seven judges unanimously convict Dreyfus of collusion with a foreign power, relying partly on a secret dossier illegally submitted to them during deliberations.
1895-01-05
Dreyfus is publicly stripped of his military rank in a degradation ceremony at the Military School in Paris.
1895-04-14
Dreyfus is transferred to Devil's Island, French Guiana, where he is held in solitary confinement.
1896-03
Lieutenant Colonel Georges Picquart, the army's new counter-espionage chief, intercepts a telegram implicating Major Ferdinand Walsin Esterhazy and finds Esterhazy's handwriting matches the bordereau.
1896-09-06
Dreyfus's guards begin shackling him nightly for two months after a false report by a British newspaper claims he escaped.
1896-11-01
A deputy head of the army's Statistics Section fabricates a supporting document that is passed to the Minister of War as genuine evidence against Dreyfus.
1897-11-15
Mathieu Dreyfus files a formal complaint against Esterhazy with the Minister of War, forcing the army to open an inquiry.
1897-11-25
Émile Zola publishes the first of three articles in Le Figaro taking up Dreyfus's cause.
1899
Dreyfus is returned to France for a second court-martial, which convicts him again and imposes a ten-year sentence; he is pardoned and released shortly afterward.
1906
Dreyfus is formally exonerated.
1935
Dreyfus dies.
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People
Ferdinand Walsin Esterhazy
ACQUITTEDFrench Army major identified by investigators as the actual author of the "bordereau" document used to convict Dreyfus; acquitted by a military court after a two-day trial despite this evidence.
Auguste Mercier
LAW ENFORCEMENTGeneral and French Minister of War in 1894; directed the initial investigation and ordered a secret dossier containing falsified documents illegally submitted to the military judges during their deliberations.
Georges Picquart
LAW ENFORCEMENTLieutenant Colonel and head of the French Army's Statistics Section (counter-espionage); his 1896 investigation uncovered evidence identifying Esterhazy, rather than Dreyfus, as the likely author of the bordereau.
Alfred Dreyfus
EXONERATEDAlsatian French artillery officer of Jewish descent; wrongfully convicted of treason in 1894 and again in 1899 on fabricated and disputed evidence; pardoned in 1899 and formally exonerated in 1906.
Roles reflect public records and court outcomes at the time of writing — supporting citations are on file under Sources.
Places
Common questions
- What happened to the victim?
- Captain Alfred Dreyfus, a Jewish French artillery officer, was wrongfully convicted of treason in December 1894 on forged and disputed evidence and exiled to Devil's Island; a cover-up by military leadership suppressed proof of his innocence for years until his 1899 pardon and 1906 exoneration.
- Where did the crime happen?
- Paris, France.
- What is the current status of the case?
- Status: overturned.
Related cases
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Sources
- ENCYCLOPEDICDreyfus affairWikipedia · 2026-07-12
- PRESSContemporaneous coverage — The GuardianThe Guardian · 2026-07-12
- PRESSContemporaneous coverage — Los Angeles TimesLos Angeles Times · 2026-07-12
Record history
- First published
- JUL 13, 2026