Only two months later, the 32nd Division was activated in July 1917 at Camp MacArthur, Waco, Texas of National Guard units from Wisconsin and Michigan. Wisconsin furnished approximately 15,000 men, and another 8,000 troops came from Michigan. The division was made up of the 125th and 126th Infantry Regiments (63rd Infantry Brigade) and the 127th and 128th Infantry Regiments (64th Infantry Brigade), as well as three artillery regiments within the 57th Field Artillery Brigade. On 4 August 1917, Battery F, 121st Field Artillery regiment was the first unit to arrive at Camp MacArthur. The remainder arrived as soon as trains could be mustered for transportation.