The current objectives of MARFORSOUTH include the training of Latin American marines and naval infantry, providing disaster relief, and counter-terrorism. Since 2021, MARFORSOUTH has been supported by the
United States Marine Corps Reserve (MARFORRES). As part of
Force Design 2030, the Marine Reserve will be providing forces for Southern Command and all other theaters that are not part of the
Indo-Pacific Command. Because of these changes, starting in 2021, MARFORSOUTH became a three-star command from the previous one-star, with Lieutenant General
David Bellon being dual-hatted as the commanding general of both MARFORSOUTH and MARFORRES. Between 2014 and 2021 the Southern Command had a Special Purpose
Marine Air-Ground Task Force assigned to it, until the Reserve took over that role. From 2014 to 2021, the Special Purpose Marine Air-Ground Task Force – Southern Command (SPMAGTF-SC) was stationed at
Soto Cano Air Base in
Honduras, from where it deployed Marines to participate in international training exercises and humanitarian relief missions across Latin America. ==List of commanders==