Colonel Ronny Anthony Johnson was commissioned an Infantry Officer upon graduation from Infantry Officer Candidate School class 4-95 at Fort Benning, Georgia Class on 25 August, 1995. His first duty assignment was Platoon Leader, 1st Battalion, 503rd Infantry Regiment, 2nd Infantry Division, Republic of Korea.

His notable duty assignments include: Platoon Leader and Executive Officer, 1st Battalion, 75th Ranger Regiment, Hunter Army Airfield, Georgia, Commander, Company B, 3rd Battalion, 15th Infantry Regiment, 3rd Infantry Division, Fort Stewart, Georgia; Tactical Officer, United States Military Academy; Operations Officer and Executive Officer, 6th Battalion, 9th Cavalry Regiment, 3rd Brigade, 1st Cavalry Division, Fort Hood, Texas; Executive Officer, 3rd Infantry Regiment (The Old Guard), Fort Myer, Arlington, Virginia; and Commander, 4th Battalion, 6th Infantry Regiment, 4th Brigade, 1st Armored Division, Fort Bliss, Texas. Colonel Johnson currently serves as Chief of Maneuver, Aviation, and Soldier Division, Capabilities Development Directorate, Army Capabilities and Integration Center, Fort Eustis, Virginia.

His military education consists of: Infantry Officer Candidate School, Long Range Surveillance Leadership Course, Infantry Basic Officer Leader Course, Infantry Mortar Leader, Infantry Maneuver Captain Career, Combined Arms Services and Staff School, Bradley Infantry Fighting Vehicle, Intermediate Level Education Qualification, Joint and Combined Warfighting School, and the Army War College.

His highest military awards and decorations include: Silver Star, Bronze Star Medal (3rd Award), Meritorious Service Medal (5th Award), Army Commendation Medal (7th Award), Combat Infantryman Badge (2nd Award), and Ranger Tab.