It was 1940, Germany had invaded the Netherlands, and she and her sister, Truus, who was two years older, had been recruited by the local Dutch resistance commander, in the city of Haarlem.
“Only later did he tell us what we’d actually have to do: Sabotage bridges and railway lines,” Truus Menger-Oversteegen recalled in a 2014 book, “Under Fire: Women and World War II.” “We told him we’d like to do that.”
Then the commander added, “ ‘And learn to shoot — to shoot Nazis,’ ” she said.
“I remember my sister saying, ‘Well, that’s something I’ve never done before!’ ”
The sisters, along with a lapsed law student, Hannie Schaft, became a singular female underground squad, part of a cell of seven, that killed collaborators and occupying troops.
The three staged drive-by shootings from their bicycles; seductively lured German soldiers from bars to nearby woods, where they would execute them; and sheltered fleeing Jews, political dissidents, gay people and others who were being hunted by the invaders.
Freddie Dekker-Oversteegen, the last surviving member of the trio, died on Sept. 5, the day before her 93rd birthday, at a nursing home in Driehuis in the Netherlands, about five miles from where she was born.
Her death was announced by Jeroen Pliester, the chairman of the National Hannie Schaft Foundation, which the Oversteegen sisters started in 1996.
Ms. Schaft was captured, tortured and executed by the Nazis on April 17, 1945, 18 days before the liberation of the Netherlands. She was 24. After the war Ms. Schaft — the martyred “girl with the red hair,” as she had been called by the Nazis — was hailed as a national heroine.
Truus Oversteegen, the leader of the three, went on to marry a fellow resistance fighter, become a painter and sculptor of works that were largely inspired by the war, write a memoir titled “Not Then, Not Now, Not Ever” and lecture about her experiences. She died in 2016.
Freddie Oversteegen said she had felt sidelined after the war, in part because she had been a member of a Communist youth group; the Dutch government was soundly anti-Soviet.
Of the three young women, she was the most reserved, even though she was the first of them to fatally shoot a German soldier. (He had been lured from a bar into the woods.) Asked in 2016 by the online magazine Vice Netherlands how she had later dealt with her participating in wartime brutality, she replied, “By getting married and having babies.”
She also said that until she and Truus were profiled in a 2016 television documentary in the Netherlands titled “Two Sisters in the Resistance,” she had been envious of her sister. By then, Truus had become a well-known author.
“I have always been a little jealous of her because she got so much attention after the war,” she said of Truus. “But then I’d just think, ‘I was in the resistance as well.’ ”
In 2014, both sisters were awarded the Mobilization War Cross by Mark Rutte, the Dutch prime minister.
Ms. Oversteegen married Jan Dekker, an engineer for the Dutch steel producer Koninklijke Hoogovens. She is survived by their three children, four grandchildren and a stepbrother from her mother’s second marriage.
Freddie Nanda Oversteegen was born on Sept. 6, 1925, in Schoten, a village in the province of North Holland, to Jacob Oversteegen and Trijntje van der Molen. (Schoten is now part of Haarlem.)
Her parents were members of International Red Aid, a social service group organized by the Communist International. Freddie and her sister joined the Dutch Youth Federation, another Communist affiliate, and made dolls for children caught up in the Spanish Civil War.
After their parents divorced, amicably (Jacob sang a farewell serenade in French), the girls moved with their mother into a small North Holland apartment, where the sisters shared a bunk. As early as the mid-1930s, the family took in Jews fleeing from Germany.
After the Germans invaded, Jews were hidden elsewhere because the Oversteegens feared that their Communist leanings might invite exposure. Many were discovered nevertheless.
“They were all deported and murdered,” Ms. Oversteegen was quoted as telling the anthropologist Ellis Jonker in “Under Fire: Women and World War II.” “We never heard from them again. It still moves me dreadfully, whenever I talk about it.”
The sisters worked as nurses in Enschede, on the German border in eastern Holland, where they could surreptitiously report on a German military airport. They also distributed leaflets and anti-Nazi posters.