The 1st Information Operations Command (Land), formerly the Land Information Warfare Activity Information Dominance Center (LIWA/IDC), is an  unit under the  of  (ARCYBER) and headquartered at .

It provides multi-disciplinary  (IO) support to the component and major commands of the . 1st IO CMD has broad authority to coordinate IO topics and establish contact with Army organizations, the  (USN) and  (USAF), and JCS IO Centers, and with  (DoD) and National Agency IO elements.