Kollwitz's father arranged for her to begin lessons in drawing and copying plaster casts when she was twelve. At sixteen she began making drawings of working people, the sailors and peasants she saw in her father's offices. Wishing to continue her studies at a time when no colleges or academies were open to young women, Kollwitz enrolled in an art school for women in Berlin. There she studied with Karl Stauffer-Bern, a friend of the artist Max Klinger. The etchings of Klinger, their technique and social concerns, were an inspiration to Kollwitz.

In 1888, she went to Munich to study at the Women's Art School, where she realized her strength was not as a painter, but a draughtsman. At the age of seventeen, Kollwitz became engaged to Karl Kollwitz, a medical student, while she was studying art in Munich. In 1890, she returned to Königsberg, rented her first studio, and continued to draw pained laborers working which had become an inspiration for her work for years.

In 1891, Kollwitz married Karl, by this time a doctor, who tended to the poor in Berlin, where the couple moved into the large apartment that would be Kollwitz's home until it was destroyed in World War II. The proximity of her husband's practice proved invaluable

The motifs I was able to select from this milieu (the workers' lives) offered me, in a simple and forthright way, what I discovered to be beautiful.... People from the bourgeois sphere were altogether without appeal or interest. All middle-class life seemed pedantic to me. On the other hand, I felt the proletariat had guts. It was not until much later...when I got to know the women who would come to my husband for help, and incidentally also to me, that I was powerfully moved by the fate of the proletariat and everything connected with its way of life.... But what I would like to emphasize once more is that compassion and commiseration were at first of very little importance in attracting me to the representation of proletarian life; what mattered was simply that I found it beautiful

cycle of works was the Peasant War, which, subject to many preliminary drawings and discarded ideas in lithography, occupied her from 1902 to 1908. The German Peasants' War was a violent revolution which took place in Southern Germany in the early years of the Reformation, beginning in 1525; peasants who had been treated as slaves took arms against feudal lords and the church. As was The Weavers, this subject, too, might have been suggested by a Hauptmann drama, Florian Geyer. However, the initial source of Kollwitz's interest dated to her youth, when she and her brother Konrad playfully imagined themselves as barricade fighters in a revolution.

Not only did Kollwitz have a childhood connection, but an artistic connection as well. She was an advocate for those unspoken for and liked to portray the working class, as evidenced in in "The Weavers", in a way no one else saw .

The artist identified with the character of Black Anna, a woman cited as a protagonist in the uprising. When completed, the Peasant War consisted of pieces in etching, aquatint, and soft ground: Plowing, Raped, Sharpening the Scythe, Arming in the Vault, Outbreak, After the Battle (which, eerily premonitory, features a mother searching through corpses in the night, looking for her son), and The Prisoners. In all, the works were technically more impressive than those of The Weavers, owing to their greater size and dramatic command of light and shadow.

They are Kollwitz's highest achievements as an etcher. While working on Peasant War, Kollwitz twice visited Paris, and enrolled in classes at the Académie Julian in order to learn how to sculpt. The etching Outbreak was awarded the Villa Romana prize, which provided for a year's stay, in 1907, in a studio in Florence. Although Kollwitz did no work, she later recalled the impact of early Renaissance art.