French nationalism

French nationalism in the Dreyfus Affair is presented as a political force shaped by defeat, military insecurity, and disputes over the army’s authority. The memory of the Franco-Prussian War of 1870 could turn the Dreyfus case into a question of national survival, making secrecy and institutional loyalty seem urgent; the same climate also gave force to antisemitic attacks and nationalist mobilization against those who challenged the army.

Defeat and the National Memory

The affair unfolded only twenty-five years after Germany had defeated France and occupied Alsace and Lorraine. The book connects that recent history to a persistent sense of national vulnerability: the war had unsettled the European balance of power and remained a reference point in later arguments about Germany and the security of France.

For Georges Picquart, the defeat was not an abstraction. At sixteen, he witnessed the shelling of Strasbourg, the destruction of its art gallery and library, and the surrender of the garrison after nine weeks. His family then had to choose between remaining under German rule and leaving for France. They arrived in Paris destitute. Picquart later understood the army as the vocation demanded by that rupture: after 1870, another career seemed frivolous. His personal history shows how the memory of occupation could bind military service to national belonging.

Security, Secrecy, and the Dreyfus Case

National anxiety also appears in the arguments used to protect the military’s handling of the case. At Alfred Dreyfus’s court-martial, the prosecution sought a private hearing on the grounds that the evidence concerned national defence. The request placed the claim of security against Dreyfus’s right to be treated like any other accused person, and helped keep the proceedings from public scrutiny.

Later, Charles-Arthur Gonse ordered Picquart to investigate Charles Ferdinand Walsin Esterhazy without bringing the bordereau into the inquiry. When Picquart warned that the army’s reputation could be damaged if it was eventually shown to have known Dreyfus’s conviction was unsafe, Gonse’s response was that the truth must not emerge. National and institutional protection thus became entangled: the case was treated as closed not because the competing evidence had been resolved, but because reopening it threatened the army’s standing.

Auguste Mercier’s account at the Rennes trial made the security rationale explicit. He claimed that the Dreyfus controversy had brought France close to war with Germany and defended sending the secret dossier to the court-martial judges in a sealed envelope. His recollection of a possible war made secrecy appear an emergency measure. Yet Jean Casimir-Perier rose to challenge Mercier’s account, and Dreyfus watched with astonishment and anger as the former minister repeated his defence.

Antisemitism and Nationalist Politics

The book shows nationalism working alongside antisemitism rather than as a neutral appeal to national unity. In his Rennes testimony, Mercier repeated allegations of a Jewish conspiracy to free Dreyfus, cited an alleged statement about the occupation of Alsace-Lorraine that Dreyfus had always denied, and revived the story of a confession before the degradation ceremony. He also continued to claim that the “lowlife D” letter referred to Dreyfus. These accusations cast the Jewish officer and his supporters as threats to the nation, while diverting attention from evidence that could undermine the conviction.

The narration compares Mercier’s allegations to the conspiratorial writing of La Libre Parole. That comparison locates the case within a public discourse in which claims of national danger could be joined to fantasies of Jewish influence. Nationalism here did not simply express fear of Germany; it could also define internal dissent and demands for justice as disloyalty.

Mobilization, Threat, and Consequence

Nationalist politics carried consequences beyond courtroom argument. As the Rennes trial approached its verdict, the police prefect warned Picquart that nationalists planned to arrive in force and that an acquittal for Dreyfus could be followed by serious violence. The warning made the pressure surrounding the verdict concrete: the danger anticipated by the authorities was not limited to the courtroom or to disputes among officers.

The political strength of this current was also visible in Mercier’s career. In January after Dreyfus’s release, he was elected senator for the Loire-Inférieure on a nationalist platform. The outcome indicates that the positions Mercier had defended during the affair retained political currency even after Dreyfus left prison.

Picquart’s refusal of a general amnesty further exposes the conflict between nationalist claims of military unity and responsibility for injustice. Although the government’s offer would have restored him to the army and given him a command, he would not accept wearing the same uniform as Mercier, Armand du Paty de Clam, Gonse, and Lauth. His choice rejects reconciliation on terms that would erase accountability. Across the affair, French nationalism is therefore shown both as a language of collective memory and security, and as a contested political instrument—one that could defend military authority, stigmatize dissent, and provoke resistance in the name of justice.