Was sent to parachute training in Cairo, Egypt and would use this training for numerous jumps into Nazi-occupied France. Was also assigned to gather information on German troop readiness in Poland as well as information on German armaments, including a new antitank gun. She travelled several times between England and Poland delivering this information. On her trip into Poland, she was stopped by German soldiers. She reportedly pulled the pins out of two live grenades and told the soldiers that if the they attempted to take her into custody, she would drop the grenades, killing all of them. The soldiers allowed her to retreat to safety.

Was stopped on another trip at the border but dumped incriminaing evidnece into a river beforehand. Unfortunately, she was still in possession of a large sum of money which she could not explain. Brazenly, she told the guards to either take the money and let her and her comrades or to turn everything over to their superiors (who would keep the money). The guards kept the money and let them escape. On another occassion, when stopped by border guards, she convinced htem that she and her companions were simple farm peasants on their way to have a picnic. On yet another occassion where she and her companions were arrested by Hungarian police, she bluffed her way out of trouble, convincing them that she was related to Admiral Horthy, Regent of Hungary. She was soon thereafter released and made her way back to England with photos showing German troop buildup.

Was parachuted into southern France in 1944 and was used as a courier, using the name Pauline (and sometimes Jacqueline) Armand, delivering mesages and materials that could not be transmitted via radio or telegraph to Cairo.

Granville was often used to spread propaganda, insisting that Englad would not abandon Poland in its fight against Nazi Germany and convincing Italian troops to desert their German allies. She worked for a period of time under Colonel Francois Cammaerts, head of the 10,000 troop maquis in Rhone Valley. When he and two allies were captured in Digne and imprisoned as spies, Granville reported met with the Nazi commandant and convinced him that if he did not release the three men immediately, he would be shot by the approaching Allied forces (A more likely scenario is that she claimed to be the niece of British General Montgomery, and threatened two local Digne liasons. They demaned that she write out a statement clearing them of collaborating with the Nazi and also demanding monetary payment, both of which were accomodated).