The Kozarac brothers are known to everyone as very significant people who influenced people's lives in their time, but their influence is still visible today. They were born in Vinkovci, and Ivan died in Vinkovci, and his birth house was renovated and opened to visitors in the style in which it was first built. With his life, Josip Kozarac influenced the development of forestry because he worked as a forester for years, and he is also known in the world as a forester-writer. His influence on the development of forests can be seen even today, and he tried to research and come to new knowledge about deforestation and their reforestation. His literary work includes poetry, prose and drama, and in his works he portrays a Slavonian peasant whom he knows completely, all his faults and virtues, and he is in the role of a doctor. In his works, he looked at various social, economic and other problems of his time, and as he presented the problems, he also offered solutions for them. Ivan Kozarac is of exceptional importance for the city of Vinkovci and Slavonia, and growing up in a poor family, he learned to fight for a better life. He finds inspiration for his literary works from his life and experience, and he is best known for his novels in which he depicts the problems of the time, such as the collapse of cooperatives, laziness, quarrels, and drunkenness. He describes his Slavonia in his poems, and that is precisely why he was called the poet of Slavonia. The most famous works of Josip Kozarac are the novel Tena and the novel Dead Capitals, and Ivan Kozarac's novel Đuka Begović. Both authors wrote their own autobiographies, and the Josip and Ivan Kozarac Days are celebrated in Vinkovci every year in their honor.