He became active in political journalism and, in 1933, he published a book titled Les Croix de sang ("The Cross of Blood").

Starting in March 1936, Boissel founded the Paris-based periodical Le Réveil du peuple [fr], which he edited as an organ of the Front.

In May 1935, he went to Nuremberg to participate in the congress of the Universal Anti-Jewish League (La Ligue Antijuive Universelle) alongside Julius Streicher,[1] and in 1936 he was received by Adolf Hitler.

[2] Boissel was sentenced to four months in prison in 1938 for uttering death threats against Prime Minister Léon Blum in Le Réveil du peuple.

The following year he defended Roger Cazy, regional delegate of the Front franc, who was jailed for spreading Nazi propaganda in Arras.

[3] Under the occupation, Boissel resumed leadership of the Front,[4] and revived Le Réveil du peuple in 1943 (its last issue appeared on 16 August 1944).