Constituted 23 July 1918 as the 98th Division.
Organized in October 1918 at Camp McClellan, Alabama.
Inactivated in November 1918 at Camp McClellan, Alabama.
Activated 18 August 1921 with headquarters at Syracuse, New York.
Ordered into active military service 15 September 1942 and reorganized at Camp Breckenridge, Kentucky as the 98th Infantry Division.
Inactivated 16 February 1946 in Japan.
Activated 19 December 1946 with headquarters at Syracuse, New York.
Major General Arthur McK. Harper - Assumed command November 1944
Headquarters, 98th Infantry Division
Headquarters Company, 98th Infantry Division
98th Cavalry Reconnaissance Troop
323rd Engineer Combat Battalion
389th Infantry Regiment
390th Infantry Regiment
391st Infantry Regiment
Headquarters and Headquarters Battery, Division Artillery
367th Field Artillery Battalion
368th Field Artillery Battalion
399th Field Artillery Battalion
923rd Field Artillery Battalion
Headquarters, Special Troops
323rd Medical Battalion
798tht Ordnance Light Maintenance Company
98th Signal Company
98th Quartermaster Company
Asiatic-Pacific Theatre (without inscription)