[1] In 1936, she traveled to France, where she aided local left-wing activists in transporting weapons to Spanish Republican forces fighting in the Civil War.

[3] She left Dolores in the care of a French family following the start of the German occupation,[1][4] and joined the Paris-based Francs-tireurs et partisans – main-d'œuvre immigrée (FTP-MOI), taking part in about 100 sabotage acts against the Wehrmacht (Armed forces of Nazi Germany), and being personally involved in the manufacture and transport of explosives.

[1] After the arrest of the Manouchian Group, the Gestapo published a series of propaganda posters, named l'Affiche Rouge, which depicted its members, Bancic included, as "terrorists".

During the 1950s, he became a noted opponent of the Party leadership around Gheorghe Gheorghiu-Dej, and, together with Mihail Davidoglu and Ion Vitner, faced criticism from activist Miron Constantinescu over his "intellectualist-liberalist tendencies".

[7] Several streets were named in Bancic's honor, and small monuments were erected in her memory, along with a wall plaque in the PCF plot at Ivry Cemetery in Ivry-sur-Seine.