Brigadier General Jeth Berrington Rey was commissioned as a Signal Officer upon graduation from Officer Candidate School at Fort Benning, Georgia on 30 May, 1996. His first duty assignment was as a Signal Officer, 3d Battalion, 75th Ranger Regiment, Fort Benning, Georgia.

His notable duty assignments include: Commander, Company A, 112th Signal Battalion, Special Operations, Fort Bragg, North Carolina; Signal Squadron Operations Officer, United States Army Special Operations Command, Fort Bragg, North Carolina; Commander, Signal Squadron, United States Army Special Operations Command, Fort Bragg, North Carolina; Commander, Special Missions Command, White House Communications Agency, Washington, D.C.; Commander, 112th Signal Battalion, 528th Sustainment Brigade, Special Operations, Fort Bragg, North Carolina; Commander, 516th Signal Brigade, 311th Signal Command, Fort Shafter, Hawaii; Executive Officer to the Army Chief Information Officer/G-6, Office of the Secretary of the Army, Washington, D.C.; and Director of Operations, G-3, United States Army Cyber Command, Fort Belvoir, Virginia. He is currently serving as the Director, J-6, United States Central Command, MacDill Air Force Base, Florida.

His military education includes: Ranger School, Airborne School, Pathfinder School, Combined Arms Service Staff School, United States Naval Command and Staff College, and the United States Army National War College.

His highest military awards include: Legion of Merit (3rd Award), Bronze Star Medal (2nd Award), Defense Meritorious Service Medal (4th Award), Meritorious Service Medal (4th Award), and Joint Service Commendation Medal (2nd Award).