The book "Witness: 1914-1916" by Jean Aycar is an artistic testimony of the events of the First World War. The author describes terrible events and impressions of life at the front, revealing the psychology of fighters, their fears and motivation. The book not only tells about war events, but also shows the inner world of the heroes, their intertwined hopes and disappointments. "Witness: 1914-1916" is a powerful literary confession about the war, which leaves the reader amazed and is designed to reveal the essence of human destiny in the conditions of a critical historical event.