1. Ludovic-Oscar Frossard was a founding member in 1905 and Secretary-General of the French Socialist Party from 1918 to 1920, as well as a founding member and Secretary-General of the French Communist Party from 1920 to 1922.

1. Ludovic-Oscar Frossard was a founding member in 1905 and Secretary-General of the French Socialist Party from 1918 to 1920, as well as a founding member and Secretary-General of the French Communist Party from 1920 to 1922.
On 1 January 1923 Ludovic-Oscar Frossard resigned his positions and left the Communist movement over political differences.
Ludovic-Oscar Frossard briefly attempted to establish an independent Communist political organization before returning to the ranks of the SFIO, gaining election to parliament under that party's banner in 1928,1932, and 1936.
From 1935 until 1940 Ludovic-Oscar Frossard held a series of ministerial positions in successive governments of Pierre Laval, Albert Sarraut, Camille Chautemps, Leon Blum, Edouard Daladier, Paul Reynaud, and the first government of Philippe Petain.
Ludovic-Oscar Frossard's position led to his investigation, trial, and acquittal over accusations of collaborationism following the fall of the Petain regime.
Ludovic-Oscar Frossard was born 5 March 1889 in Foussemagne, Territoire de Belfort, France.
Ludovic-Oscar Frossard's father was a saddlemaker who was dedicated to his son's education and success in life.
Ludovic-Oscar Frossard became involved in Socialist politics, joining the Section francaise de l'Internationale ouvriere, at the time of its formation in 1905.
Ludovic-Oscar Frossard would remain in that capacity until the SFIO split into socialist and communist wings at the December 1920 Congress at Tours.
Ludovic-Oscar Frossard was active upon his return to France in advocating for the affiliation of the SFIO to the Comintern, and he departed with the left wing at the Tours Congress to form the Communist Party of France ; he was its Secretary-General.
Ludovic-Oscar Frossard was twice re-elected as the head of the PhD and was endorsed both at its 2nd Congress at Marseilles in December 1921 and its 3rd Congress at Paris in October 1922.
Ludovic-Oscar Frossard traveled again to Moscow in June 1922 to serve as a delegate to the 2nd Enlarged Plenum of the Executive Committee of the Communist International, a journey that marked his second and final trip to Soviet Russia.
Ludovic-Oscar Frossard initially attempted to form a dissident Communist group but ultimately failed in this task and returned to participation in the SFIO, now headed by Leon Blum.
Ludovic-Oscar Frossard quit the SFIO group after the 1936 elections.
Ludovic-Oscar Frossard's departure did not prevent him from becoming Minister of Propaganda in Blum's Second Popular Front Ministry.
From 1935, Ludovic-Oscar Frossard had been a member of the governments of Pierre Laval and Albert Sarraut as well as that of Camille Chautemps.
Ludovic-Oscar Frossard was made Minister of Public Works and Transmissions in the First Government of Philippe Petain after the Battle of France and the beginning of Nazi Germany's occupation of France.
On 23 January 1941, Ludovic-Oscar Frossard was made a member of the National Council of Vichy France.
Ludovic-Oscar Frossard's son, Andre Ludovic-Oscar Frossard, was a journalist and writer who converted to Catholicism in 1935.