The US Army Special Forces are known for their exceptional skill and professionalism in modern war.
Alongside the CIA, they were the first Americans on the ground in Afghanistan only one month after 9/11.
There they linked up with the Northern Alliance and brought Hamid Karzai into Kabul.
Riding on horses in the beginning of that war ...
... or on ATVs ...
... they were both feared and respected.
But the Special Forces don't take just anybody.
The Army selects this elite few from among the best soldiers who come to Special Forces Assessment and Selection.
The training is physically exhausting ...
... and requires exceptional endurance and mental skill.
After just 24 days at SFAS, they move on to another year of training.
That year includes language training (every Special Forces soldier learns a second language), specialty skills — such as weapons or radios — and finally Robin Sage, the culminating training exercise.
But it's only the beginning of their Special Forces career as they don the green beret for the first time ...
... and earn the "Long Tab" of the Special Forces.
They'll move on to a Special Forces group and start training within their 12-man teams.
That might mean High Altitude Low Opening training ...
... i.e., jumping out of an airplane ...
... with an oxygen mask, since they'll be above 30,000 feet.
Or breaching and clearing rooms.
What Special Forces would call Close Quarters Battle.
The object being to get through the doorway as quickly as possible ...
... and overwhelm a hostile force with blistering small-arms fire.
All in a matter of seconds, of course.
It's not only Navy SEALs in the water.
The Special Forces have their own diving school.
And if their group needs winter training, they'll get that too.
Ultimately, all this training gets them ready for their mission as the masters of unconventional warfare.
That may mean direct action — kicking in doors and going after the bad guys
Or helping foreign governments with their own defense ...
... and training their military to help them fight.
Most recently, Green Berets and other elite special operations forces have embedded and advised with Iraqi security forces and Kurdish militia fighters to take on ISIS.
And with much of Mosul, Iraq, now liberated and US-backed forces closing in on Raqqa, the ISIS capital, that strategy seems to be working.
One thing is certain when it comes to the Special Forces.
They have their pick of the best small arms ...
... and really, really big arms.
They have some of the most highly skilled shooters in the military ...
... who are both extremely accurate and fast — and can remain so when fired upon.
They have some of the best equipment ...
... from their Humvees ...
... to helmets.
They are supported by the finest helicopter pilots in the world ...
... and in Special Forces, even the dogs are elite.
As wars in Iraq and Afghanistan wind down ...
... the US Army Special Forces will continue to train for the next fight ...
... and will most likely be the first ones called in to battle ...
... to live up to their motto: De Oppresso Liber — To Liberate the Oppressed.