7. British Special Air Service (SAS)
They are the basis for Special Forces all around the world. Even USA’s Delta Force was formed after the founder spent some time with SAS. They are the number one fighting force in the world and are trained to perform equally well in all other fields.
Their insignia bears the famous phrase ‘Who dares wins.’ Talking about their role in fighting what followed the Iraq war, US General Stanley McChrystal said, ‘Essential. Could not have done it without them.’