US army Green berets are a special operations force tasked with five primary missions unconventional warfare (the original and most important mission of Special Forces), foreign internal defense, special reconnaissance, direct action, and counter-terrorism
Other duties include hostage rescue, combat search and rescue (CSAR), security assistance, peacekeeping, humanitarian assistance, humanitarian demining, counter-proliferation, psychological operations, manhunts, and counter-drug operations; other components of the United States Special Operations Command or other U.S. government activities
The main mission of the Special Forces was to train and lead unconventional warfare (UW) forces, or a guerrilla force in an occupied nation that no one is allowed to know. The Special Forces are the only U.S. Special Operations Force (SOF) trained to employ UW
