In recent years it has played a key role in the Sri Lankan Civil War, conducting surveillance and patrol, amphibious and supply operations. During the war, the navy moved from a small force focused on coastal patrols to a large combat force concentrating on asymmetric naval warfare capable of amphibious and land operations in support of counter-insurgency operation that progressed into engagements of a new form of littoral zone warfare. It carried out expeditionary deployments in the Indian Ocean in order to intercept rogue arm shipments on the high seas. The navy has its own elite special forces unit, the Special Boat Squadron.