Lieutenant General Duane A. Gamble assumed the duties as the Deputy Chief of Staff, G-4 on 16 September 2019. He oversees policies and procedures used by all Army Logisticians throughout the world. He previously served as Commanding General of the US. Army Sustainment Command from July 2017 to August 2019.

A native of Arbutus, Maryland, LTG Gamble attended Western Maryland College (since renamed McDaniel College), where he earned a Bachelor of Arts degree and was commissioned as an Ordnance officer in May, 1985. He has Masters of Science degrees from the Florida Institute of Technology and the Industrial College of the Armed Forces (since renamed the Dwight D. Eisenhower School for National Security and Resource Strategy).

Prior to assuming duties as the Deputy Chief of Staff, G-4, his most significant assignments include: Commanding General, U.S. Army Sustainment Command; Commanding General, 21st Theater Sustainment Command; Assistant Deputy Chief of Staff for Logistics (G-4), Headquarters, Department of the Army; and Deputy Commanding General of the 1st Theater Sustainment Command.

LTG Gamble's other notable assignments include: Commander, 528th Sustainment Brigade (Airborne), supporting Army Special Operations Forces in Iraq, Afghanistan, and the Philippines; Commander, 426th Forward Support Battalion (Air Assault) supporting the Bastogne Brigade (1st Brigade, 101st Airborne Division); Deputy Commanding Officer, 46th Corps Support Group (Airborne); and Commander, Company B, 782nd Maintenance Battalion (Airborne) supporting the Falcon Brigade (2nd Brigade, 82nd Airborne) during Operations Desert Storm and Desert Shield.

His other key staff assignments include: Director, Force Projection and Distribution (G-44D), Army G-4; Deputy J-4, United States Forces Iraq; J-4, Joint Task Force Haiti; G-4, XVIII Airborne Corps; G-4, NATO Rapid Deployable Corps -- Turkey; Executive Officer for the Army Materiel Command G3; G4, 101st Airborne Division (Air Assault) during Operation Iraqi Freedom; and Executive Officer, 307th Forward Support Battalion (Airborne), 82nd Airborne Division.

LTG Gamble's awards and decorations include the Distinguished Service Medal, Bronze Star Medal (with Oak Leaf Cluster), Air Assault Badge, and Master Parachutist Badge.