 The MEB is usually commanded by a brigadier general as CG, who is assisted by a colonel as the chief of staff (CoS) of the MEBs general staff and who is "dual-hatted" as the MEBs second-in-command.The MEB consists of three regimental equivalent combat elements (ground, air, and logistics) and a battalion-sized headquarters element.The ground combat element (GCE) consists of a Regimental Combat Team (RCT), which is a heavily reinforced infantry regiment (including field artillery, infantry reconnaissance, amphibious assault vehicle, tank, light armored reconnaissance, and combat engineer units), itself roughly equivalent to a US Army Infantry Brigade Combat Team.