On 1 September, the 31st was reorganized in accordance with the tables of organization of 8 August, which called for a square division with four infantry regiments. As a result, the 61st Brigade included the 121st and 122nd Infantry with the 117th Machine Gun Battalion, the 62nd included the 123rd and 124th Infantry with the 118th Machine Gun Battalion, and the 56th included the 116th, 117th, and 118th Field Artillery Regiments with the 106th Trench Mortar Battery. During October, the division was reinforced with 10,000 men from Alabama, Florida, and Georgia, transferred from Camps Gordon, Jackson, and Pike, as it began systematic training on 22 October. On 15 March 1918, Major General Francis H. French became division commander; he was replaced by Major General LeRoy Springs Lyon two months later.