Janissaries is a book written by the American writer Jerry Purcell, which tells about the adventures of a group of space warriors who became riders of spaceships and an invincible force in the galaxy. They are brought up in strict rules and are responsible for maintaining peace and order in the universe. This exciting science fiction book is full of action, intrigue and philosophical reflections on the concepts of war and the peaceful coexistence of different races in space. "Janissaries" is an exciting journey into the world of the future, where strength, courage and sacrifice are considered the highest values.