Marguerite Jutier was sixty-one years old when Germany occupied France in June 1940. She lived alone in a small stone farmhouse outside the village of Bussière-Poitevine in the Haute-Vienne department, a remote corner of Limousin where the roads were unpaved and the railway line connecting Limoges to Poitiers ran through a cutting behind her property. She had no military training, no political affiliation, no connections to the Resistance networks that would eventually form in the region. What she had was a furious, quiet anger -- and a hammer.

For three years, from 1941 to 1944, Jutier systematically dismantled the Nazi war machine one railway bolt at a time. She would wait until the midnight express had passed, then walk to the railway cutting behind her house with her cane in one hand and a hammer in the other. She targeted the bolts that held the rail tracks in place. She didn't remove them -- that would have been noticed too quickly. Instead, she loosened them, two or three threads at a time, over the course of weeks. By the time a patrol came through, the tracks would be just loose enough that a heavy train passing at speed would cause them to shift. She was patient in a way that terrified the Germans.

Her method was devastatingly effective. Between 1941 and 1944, at least four German military trains derailed on the line near Bussière-Poitevine, killing an estimated 70 German soldiers and destroying tons of military supplies. The Germans, baffled by the frequency of accidents on this particular stretch of track, posted guards at the railway crossing. Jutier would watch them from her kitchen window, wait for their shift change, and strike during the gap. She kept a notebook in which she recorded the dates of each sabotage, the train numbers, and the estimated damage. The notebook, found after the war, documented 23 separate acts of sabotage over 36 months.

What made Jutier's operation extraordinary was not just its duration but its secrecy. She was known in the village as a devout Catholic and a quiet, somewhat reclusive widow. No one -- not her neighbors, not the village priest, not the local policeman -- had any idea what she was doing. She never spoke of it. When German soldiers came to requisition food from the village, she would give them eggs and apples and a gentle smile. Then she would go back to her garden and wait for midnight.

She was eventually caught -- not by the Germans but by her own nephew, who came to visit and found the hammer, the notebooks, and the tracks visible from her back door. He was horrified and immediately joined the local FTP (Francs-tireurs et Partisans) unit, which used her sabotage records to plan larger operations. Jutier, who had worked alone for three years, became an informal advisor to the local resistance network, drawing on her intimate knowledge of the railway's schedule and construction.

After the war, Jutier was awarded the Médaille de la Résistance and the Croix de Guerre. She died in 1965 at the age of 86, having never sought any recognition for her actions. Her neighbor, who discovered her notebooks in the 1990s and donated them to the Musée de la Résistance in Limoges, described her as "the most dangerous woman in Haute-Vienne, and the most ordinary."