The 15th Marine Expeditionary Unit prepares to debark the amphibious transport dock ship USS Green Bay in 1970s-era Assault Amphibious Vehicles.Photo: Flickr. Everything old is new again for the U.S.

After nearly eighty years of continuous service, in March 2020 the Marine Corps announced it planned to retire its three remaining tank battalions in a bid to re-model the force for a great-power ...