

By Daniel Brown and Paul Szoldra,Business Insider
They're one of the most elite fighting groups in the world. They silently slip into hostile countries to train and lead guerilla forces.
The US Army's Special Forces are known to the public as Green Berets — but they call themselves the quiet professionals.
They work in 12-man teams, known as an "A-Team," with each member having a specific job.
The ranking officer is the team leader, the weapons sergeant knows just about every weapon in the world, the communications sergeant tees up ordnance or extract, and the medics can take lives as quickly as saving them.
Here's what they do:
[Wikimedia Commons](http://en.wikipedia.org/wiki/Special_Forces_(United_States_Army%29)
US Army
Green Berets assigned to the Special Forces Advanced Skills Company Sniper Detachment, 1st Special Forces Group (Airborne) make elevation adjustments to engage their target during an urban stress shoot on Joint Base Lewis-McChord, Wa., on 29 June, 2017. The training allows the sniper teams to work on their skills in a stressful and realistic urban shooting environment.
[Wikimedia Commons](http://en.wikipedia.org/wiki/Special_Forces_(United_States_Army%29)
Green Berets assigned to 1st Battalion, 10th Special Forces Group (Airborne), enter and clear a room during a Special Forces Advanced Urban Combat (SFAUC) training exercise near Stuttgart, Germany, Nov. 16, 2017.
[Wikimedia Commons](http://en.wikipedia.org/wiki/Special_Forces_(United_States_Army%29)
May 26: U.S. Army Green Berets from 3rd Special Forces Group (Airborne), and Marines from Marine Special Operations Command, crawl across the Red Sea floor on a closed-circuit dive during Eager Lion 2015 in Jordan.
A U.S. Army 10th Special Forces Group (Airborne) Soldier provides cover fire for a fellow Soldier during a live-fire training scenario in Rovaniemi, Finland on Mar. 16, 2018.
U.S. Army Special Forces Operational Detachment-Alpha Soldiers in 3rd Special Forces Group (Airborne) train Senegal Soldiers on how to clear a room in a glass house during Flintlock 2018 in Tahoua, Niger, April 13, 2018.
[Wikimedia Commons](http://en.wikipedia.org/wiki/Special_Forces_(United_States_Army%29)
[Wikimedia Commons](http://en.wikipedia.org/wiki/Special_Forces_(United_States_Army%29)
[Wikimedia Commons](http://en.wikipedia.org/wiki/Special_Forces_(United_States_Army%29)
Reuters
DVIDS
Screenshot/Twitter via @jenanmoussa
[DVIDS](http://en.wikipedia.org/wiki/Special_Forces_(United_States_Army%29)
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