Louis Loyzeau de GrandmaisonLouis Loyzeau de Grandmaison (1861-1915) was a French military theorist and staff officer. One of the key proponents of what would become known as the Cult of the Offensive, his writing and teaching provided part of the groundwork for French militarydoctrine heading into the Great War. He was killed in 1915 while leading the Fifth Army Reserve Group. Read More Read Less