 He contributed to the underground publication "La Voix du Nord", and joined the Libération-Nord resistance movement, taking advantage as his position as director of the "Société franco-belge" to pass information whilst on business trips to Lille and Paris, and arrange the aerial bombing of the workshops of the "franco-belge" when a German locomotive was being serviced there.In 1943 German counter intelligence located a radio transmitter of his resistance network, and twenty members of the network were arrested, including Bostarron.After a secret trial by the special tribunal of the 65 Corps of German Army he was shot at (Bondues) on 20 January 1944.