He became the leader of the Camelots du Roi, the youth organization of the Action Française which took part in many right-wing demonstrations in the years before World War II (1939–45).

[4] In 1894 he published his first book, Le règne de la grâce, an essay inspired by the philosophy of the German philosopher Novalis that was praised by the Socialist leader Jean Jaurès.

[1] Late in 1898 Vaugeois, Pujo and a few other nationalists who met at the Café de Flore founded the Comité d'action française (Committee of French Action).

[2] Three of this group, Louis Dausset, Gabriel Syveton and Vaugeois, opposed to the League for the Rights of Man and Dreyfus, launched a petition that attacked Émile Zola and what many saw as an internationalist, pacifist left-wing conspiracy.

[6][7] In November 1898 their petition gained signatures in the Parisian schools, and was soon circulated throughout political, intellectual and artistic circles in Paris.

[2] He said the purpose of the Action française should be "to remake France, republican and free, into a State as organized at home, as powerful abroad, as it was under the Ancien Régime.

"[3] The decision to create the nationalist anti-Dreyfusard Ligue de la patrie française (League of the French Homeland) was made on 31 December 1898.

In his keynote speech at this meeting Vaugeois declared that the movement stood for "anti-Semitic, anti-Masonic, anti-parliamentary and anti-democratic" nationalism.

In the autumn of 1908 Pujo led the Camelots in a series of nationalist demonstrations ostensibly against a Sorbonne student named Thalamas who had insulted Joan of Arc.