Created to fight against the bureaucratization of the French Communist Party, it became a reference for the labor movement in that country, always being published by organizations linked to Trotskyism.

During the Occupation of France by Nazi Germany, it was published clandestinely, becoming the first publication of the French Resistance,[3] and carrying out emblematic campaigns, such as the fight against the Compulsory Work Service deportations[4] and anti-Semitism.

[2] During the preparation for the release of La Vérité, Trotsky sent a letter to the direction of the publication in which he stated:[6] His weekly is called The Truth.

[12] At the XXXII congress of the FSWI, in Mulhouse, in June 1935, the BL activists became a large minority that began to have weight in the debates of the party.

[14] In October 1938, ICP militants decided to join the Workers and Peasants' Socialist Party (WPSP) led by Marceau Pivert.

[16] The newspaper's political line during this period focuses on organizing the struggle against fascism, imperialism, war, deportations, racism and antisemitism.

"[23] In edition 45, of May 20, 1943, La Vérité is the first newspaper in occupied Europe to denounce the existence of the Auschwitz Concentration Camp, thanks to a direct witness who fled.

The article describes living conditions, clothing, hygiene...[24] It was such an important journalistic scoop that, through the voice of the Stalinist leader Fernand Grenier, excerpts from La Vérité were read on Radio Londres, although omitting that there were also German prisoners in Auschwitz.

[26] But a few weeks later, Albert Bayet, director of the Federation of the Clandestine Press, renamed in August 1944 as the French National Press Federation (FNPF), asked the newspaper's management to prove that the publication carried out "... a campaign in favor of France and its allies, England, USSR, United States, Republic of China, etc."

[26] Trotskyists bitterly note "that freedom of the press is valid only for those who vow to leave intact the capitalist world, responsible for fascism and war".

The minority of the ICP, around Pierre Frank (member of the European leadership of the Fourth International), started to publish the magazine La Vérité des travailleurs from August 1952.

[29] The ICP majority, which would become the Internationalist Communist Organization, would continue to publish La Vérité in newspaper form until November 1958.

In 1966, the ICFI organizes its third Conference and adopts the Reconstruction of the Fourth International as a resolution, dividing among its members a series of tasks to achieve this goal.

[31] In July 1972, the ICFI held an international conference, bringing together, in addition to the Internationalist Communist Organization, other Trotskyist organizations from Eastern Europe and Latin America, notably the Política Obrera of Argentina, led by Jorge Altamira, the Partido Obrero Revolucionario of Bolivia, led by Guillermo Lora and the October Group from Brazil.