[2] On 9 July 1918, the War Department ordered the organization of the 12th Division at Camp Devens.
Cadres of non-commissioned officers and privates was taken from each of the two existing regiments and assigned to the new 73rd Infantry and 74th, both war-raised National Army units consisting mostly of draftees from the Northeastern United States, as a nucleus.
It consisted of the 34th, 35th, and 36th Field Artillery Regiments and a trench mortar battery.
Major General Henry P. McCain commanded this division from the time of its organization until it was demobilized.
[4] Interim commanders included George L. Byroade, Almon L. Parmerter, and John E.