He thus had to patrol the Swiss borders and published several texts in the review "Lettres" which would be collected in 1944 into "Les Grandes Journées de Printemps" hailed by Paul Eluard.
Es llamado a proteger las fronteras suizas y publica en la revista "Lettres Lettres" varios textos que forman en 1944 "Les Grandes Journées de Printemps", alabados por Paul Eluard.