The Garbage Island Incident is a special operation performed by the Regular Army in Metal Slug 7. It takes place after the Oguma Crisis and White Baby Crisis and one year prior to the Ptolemaic War. After the destruction of the Amadeus Syndicate and Oguma Advanced Technologies, the Regular Army resumed its search for Donald Morden. After spotting a hint of Rebel Army occupation on Garbage Island, the Regular Army dispatched their top men and women P.F. Squad and S.P.A.R.R.O.W.S to dispose of them before they could have a chance to launch another global war. Once more, they would be aided by members of its recently hired mercenary group, the Ikari Warriors.