He would remain a member for the rest of his life, writing several political poems including one to Maurice Thorez, the general secretary of the PCF. In 1933 he began to write for the party's newspaper, L'Humanité, in the 'news in brief' section. In the 1920s, Aragon became a fellow traveller of the French Communist Party (PCF) along with several other surrealists, and joined the Party in January 1927. Having been involved in Dadaism from 1919 to 1924, he became a founding member of Surrealism in 1924, with André Breton and Philippe Soupault under the pen-name 'Aragon'. Andrieux's refusal or inability to recognize his son would influence Aragon's poetry later on. Aragon was only told the truth at the age of 19, as he was leaving to serve in the First World War, from which neither he nor his parents believed he would return. Aragon's mother passed Andrieux off to her son as his godfather. His biological father, Louis Andrieux, a former senator for Forcalquier, was married and thirty years older than Aragon's mother, whom he seduced when she was seventeen. He was raised by his mother and maternal grandmother, believing them to be his sister and foster mother, respectively.

Louis Aragon (French: , born Louis Andrieux 3 October 1897 – 24 December 1982) was a French poet, novelist and editor, a long-time member of the Communist Party and a member of the Académie Goncourt.

Strophes pour se souvenir