He started by reproducing Italian regimental vignettes when the supply of originals proved insufficient for his needs.
Following the success of Delandre's other productions, the French Red Cross asked him to produce similar stamps for them in order to raise funds.
Unfortunately, despite selling many stamps, Delandre failed to pay the Red Cross their share of the proceeds and in 1917 he was arrested.
He ended up in Marseille and under the guise of Baron Edmond Picarat he began another fraud by starting a leprosy charity.
Other pseudonyms used by Gaston Fontanille include Commander Deville, The Baron Allard, The Marquis of Vaurens and The Count of Chabanes.