1 Special Forces (U.S. Army) The U.S. Army Special Forces, commonly known as the Green Berets, is a specialized elite unit within the United States Army. Established in 1952, this branch is tasked with conducting unconventional warfare, counter-insurgency, and special reconnaissance activities. These forces are trained for complex missions requiring small teams to work closely with indigenous populations to create, advise, and assist military capabilites among local forces. The Special Forces also have a humanitarian role in providing disaster relief and helping build infrastructure around the world. The motto of the unit is "De Oppresso Liber," which means "To Free the Oppressed."