Sofia Zajárovna Fedórchenko (1880-1957) was born in Saint Petersburg. Her mother was a gypsy actress of French origin who traveled a lot, spending long periods in Paris, where she lived from the age of seven to twelve. Sofia was raised in the family of her stepfather, who was an engineer, whom she accompanied on many of her trips throughout Russia, in which she became interested in popular culture, folklore and ethnography. After graduating from college, she studied law for several years at university. In 1914 she enlisted as a nurse and served at the front until the end of 1916.

As a result of her experiences and her direct contact with soldiers and the wounded, her first book, The People in War, published in 1917, was born, with the subtitle of Notes made on the front. It was very well received by critics and literary circles in Russia, who encouraged the author to continue working on the second part of the book, dedicated to the time of the Revolution, and the third, which covers the period of the War. Civil (1918-1922).

In the 1920s, Sofia Fedorchenko published about a hundred books of children's literature and played an active role in the literary life of Russia. During World War II she remained in Moscow and wrote the heroic poem Iliá Múromets and a million heroes, as well as screenplays, plays and short stories.

In 1983 the third part of El pueblo en la guerra was published, and in 1990, the first edition of the complete trilogy.