The 780th Military Intelligence (MI) Brigade (Cyber) was activated on October 1, 2011, as a Major Subordinate Command under the U.S. Army Intelligence & Security Command, while also serving under the operational control of U.S. Army Cyber Command (ARCYBER). The 780th MI Brigade is the only operational offensive cyberspace Brigade in the U.S. Army, where we actively fight alongside our Joint partners to achieve U.S. supremacy in an increasingly contested cyberspace and electromagnetic domain.

The 780th MI Brigade (Praetorians) consists of the Headquarters and Headquarters Company, 781st MI Battalion, 782nd MI Battalion, and the 11th Cyber Battalion (CYB).

The 781st MI Battalion (Vanguard), officially activated on July 2, 2008 under the former name of the Army Network Warfare Battalion, is headquartered at Fort Meade, Maryland. In October 2011, the battalion was re-designated the 781st MI Battalion and assigned to the newly activated 780th MI Brigade in the culmination of over ten years of work to establish the Army's cyberspace operations capability.

The 782nd MI Battalion (Cyber Legion), officially activated on June 7, 2013, is headquartered at Fort Gordon, Georgia, and works in collaboration with the 706th Military Intelligence Group. Detachments Texas and Hawaii were organized as part of the 782nd MI Battalion in 2013 and 2014 respectively, giving the Brigade a footprint in four states supporting multiple operational headquarters.

The 11th Cyber Battalion (Leviathans), officially activated on June 6, 2018, at Fort Gordon, Georgia, as the 915th Cyber Warfare Battalion (CWB), under the Command Authority and Administrative Control of the 780th MI Brigade. On October 16, 2022, the 915th CWB was officially re-designated as the 11th Cyber Battalion (11th CYB). The 11th CYB is the first scalable organic expeditionary capability to meet the Army's current and projected tactical cyberspace requirements, including the integration of cyber and electronic warfare.