The four-star generals and admirals who lead U.S. military commands have all requested the support of amphibious ready groups and Marine Expeditionary Units , according to the highest-ranking officer in the U.S. Marine Corps. U.S. Marine Corps Commandant Gen. Eric Smith told audience members at Modern Day Marine in Washington on Thursday that the demand for ARG-MEUs has exceeded the 3.0 presence he previously called for. “I won’t say how many of the ARG-MEUs our combat commanders asked for, but