Mme. Bulart was recruited into Possum in August 1943, by Raymond Gallet of Fismes. Prior to that she had worked for the Liberation intelligence network, where her job was to provide information about the railways. She also passed on information about allied airmen, who came down in the area and made false identitiy cards.

In the Possum organisation, her main function was to organise the safehouses around Reims & to distribute provisions such as food & clothing. It is known that she was responsible for running the safehouses of M. & Mme. Aubert, Bruno, Drion, Dubert/Oubest(?), Lacombe & Mme. Mondet (& her three daughters). Because of security considerations, the Bularts were not allowed to shelter airmen in their own home, but Fred Gardiner (RAF) & Herbert Pond (RNZAF) did briefly stay there, after their arrival on 10 September 1943. She was also helped by Abbé Lundy (St Benoit) & Abbé Bresel(?).

Food was provided locally by M. van Egro (farmer), M. Petit (fruiterer), M. Houssier/Hourrier? (butcher) & M. Pierre (butcher) of Mailly-Champagne. Because of his job at the Ministry of Agriculture, M. Bulart was also able to bring food in sealed containers, from the country. He also transported Conrad Lafleur.

The Bularts helped find shelter & provisions for about 20 airmen; this number has been officially confirmed. Currently, these are the ones who are known:

On 3 January 1944 the Bularts were warned of the arrests in Fismes, by one of their sons. They left the same day for Soissons, where he lived,. On 4 January 1944, the Gestapo arrived at their house in Reims to find it empty. They stayed undercover in Soissons until 13 February, then moved to Paris (Clichy), where they remained until after the liberation.