Werth was a protégé and friend of
Octave Mirbeau, the author of
The Diary of a Chambermaid, completing Mirabeau's final novel,
Dingo, for him when the author's health failed. He manifested his anti-clericalism as an independently minded
anti-bourgeois anarchist. His first significant novel,
La Maison blanche, which Mirabeau prefaced, was a Prix Goncourt finalist in 1913. At the outbreak of the
First World War, Werth, 34, having earlier completed his active-duty and reserve service, was mobilized into the territorial army and, as such, assigned to the rear. Despite opposing the war, he volunteered for combat duty first as a rifleman then as a radio operator, spending time in one of the worst sectors of the war before being invalided out by a lung infection after 15 months' service. Shortly after, he completed
Clavel, soldat, a pessimistic and virulently anti-war work that caused a scandal when it was released in 1919 but which was later cited as among the most faithful depictions of trench warfare in Jean Norton Cru's monumental 1929 survey of French World War I literature. Werth was an unclassifiable writer with an acid prose, who wrote of the inter-war period as well as advocating against colonialism (
Cochinchine, 1928). He also wrote against the colonial period splendor of the French empire, and against
Stalinism which he denounced as a leftist deception. He also criticized the mounting
Nazi movement. In 1931 when he met
Antoine de Saint-Exupéry, it was the beginning of a very close friendship. Saint-Exupéry's
Le Petit Prince (
The Little Prince) would be dedicated to Werth. After the
Fall of France, during its occupation, the Werths remained in France despite offers by the Centre americain de secours in Marseille to help them emigrate. In July 1941 Werth was required to register as Jewish, his travel was restricted and his works banned from publication. His wife, Suzanne, was active in the Resistance, crossing the demarcation line clandestinely more than a dozen times and establishing their Paris apartment as a safe house for fugitive Jewish women, downed British and Canadian pilots, secret resistance meetings and storage of false identity papers and illegal radio transmitters. Their son, Claude, continued his studies first in the Jura and then in Paris, later becoming a doctor. Werth lived poorly in the
Jura Mountain region, alone, cold and often hungry.
Déposition, his diary, was published in 1946, delivering a damning indictment of
Vichy France. He became a
Gaullist under the Nazi occupation and after the war contributed to the ''Liberté de l'Esprit'' intellectual magazine run by
Claude Mauriac. Werth had regularly contributed to magazines, particularly
Marianne. == Antoine de Saint-Exupéry ==