Gaston d'Illiers was a sculptor, who specialized in animal motives, and was recognized and honored internationally for his very realistic horse sculptures. His works were appreciated by horse lovers for their accuracy and fidelity to nature. He was also an excellent horse rider.
During World War I, he was recruited and participated in the Champagne Offensive of 25 September 1915. He ended the war in Orleans as head of horses and their filing dressages. D’Illiers died in 1932 from a fever contracted during a journey aboard the horse Orleans Olivet.