With every pencil stroke, children using this colouring book experienced the brutal everyday lives of their relatives at the Front. The pictures are not childish. Death and violence are everywhere. The book was another form of propaganda, showing how hard the soldiers fight for their country and how important this war was for the nation.
It was created by Willy Planck (1870-1956), a book illustrator and relative of Max Planck, who won the Nobel Prize for Physics in 1918 for his quantum theory. Willy illustrated many books for children and young people, including Heidi by Johanna Spyri, The Leatherstocking Tales by James Fenimore Cooper and titles by the adventure novelist Karl May.