She joined the
Special Operations Executive (SOE) in early 1943. Following training, she landed in a
Hudson aircraft on 18 October 1943 in France with
Richard Heslop (organiser of the Marksman circuit, codename "Xavier"), a radio operator, Owen Denis Johnson, and an RF agent of Charles de Gaulle, Jean Rosenthal. Heslop described Rochester as very English in appearance. "She did not walk, she
strode...you automatically expected to see a couple of
Labradors at her heels...She stuck out like a sore thumb." But, he added, "She did a fine job for she had guts and imagination." In Spring 1944, Heslop reluctantly requested that Rochester be recalled by SOE to England, as she "looked so like an Englishwoman" that he and the French leaders were apprehensive that she would be captured by the Germans. The capture of one member of a network would endanger the other members as the captured member might reveal details of the network under interrogation and possibly torture. Heslop blamed SOE for recruiting an agent who looked so "un-French." She left the Marksman circuit, but didn't return to England and instead went to Paris to see her mother. She was arrested on 20 March 1944 in Paris. She was held at the
Fresnes Prison, then transferred to the
Vittel Internment Camp, where she stayed until liberation. == Honours and awards ==