It was at this time that he became friends with Luigi Bertoni, one of the major figures of the libertarian movement in Switzerland, who published Le Réveil anarchiste, in Geneva, from 1900 to 1946.

Led by Tronchet and Clovis-Abel Pignat, it lasted 15 days, and the bosses gave in to the demands of the reduction of working time, the minimum wage, etc.

Released from prison on February 19, 1941, he gradually moved away from the anarchist movement, taking over the reins of the Geneva FOBB, organizing strikes and construction sites to avoid the militarization of the unemployed.

[1][3][5][6] In 1937, he contributed to the creation of the Iberian Office for Economic Expansion (OIDEE), which linked agricultural collectives in Spain with consumer cooperatives in Switzerland.

[3][5] After the war, he continued his work as a trade union activist, also fought for the right to abortion, anti-militarism, the creation of cooperatives, etc.