Special forces, or special operations forces are highly trained military units, well equipped to perform unconventional, unorthodox covert missions that are typically related to a nation’s political, economic purposes. There are many accounts of distinct forces throughout the history of warfare, which specialize in covert operations rather than conventional combat. The Romans used small, fast, camouflaged ships with specially trained soldiers for scouting and commando operations. Then, during the War of Crusades, Muslims deployed many camouflaged ships to gather intelligence and raid passing enemy ships. In Japan, ninjas were recognized as a special force, entitled for espionage and assassins. They are no ordinary military personals, so as our list. We enlisted 15 of the best of the best Special Forces around the world.