The 31st transferred almost all of its infantry privates and about half of its artillery privates from November to June, including 4,300 who were sent to Camp Merritt. In June, 9,200 men from Michigan and Illinois transferred to the division, followed by 5,700 from Illinois in July. By 21 July, the division fielded 24,000 men, with its officers mostly from the Organized Reserve Corps and the National Army. The 56th Field Artillery Brigade left to train at Camp Jackson on 24 July, while the 2nd Battalion, 122nd Infantry relocated to Camp Greene on 20 August. During the latter month, 2,000 men, including 1,200 from Camp Travis, joined the 31st. On 28 September, 61st Brigade commander Brigadier General Walter Alexander Harris took command of the division, leading it until 14 November.