Special Forces or SF, is an elite special operations force of the U.S. Army trained for guerrilla warfare, unconventional warfare, and special operations.
The phrase Special forces is commonly used to refer to any soldier under Special Operations Command. However, the term "Special Forces" is a direct reference to The United States Army Green Beret's. The Green Beret cadre consists of 8 active groups 1st, 3rd, 5th, 7th, 8th, 19th, 20th groups respectively. Special Forces are also Special Operations, however, there is only one Special Forces.
Special Forces Groups are futher distinguished by specific ODA (Operational Detatchment Alpha), not to be confused with ODD, or D-boys, Operational Detatchment Delta, or more commonly refered to as Delta Force. Also incorrectly lumped into the Special Forces nomenclature are RANGER Batts, NAVSPECWAR operators (SEALS, DEVGRU, NSWU) and Air Force CCT, PJ, TACP operators. While many of these units function in a similar capacity to SF operators, there are in fact not Special Forces, but are known by their aforementioned acronyms. All fall under JSOC (joint special operations command) thus can be accurately described as special operations.

A unit of US to Iraqi measurement conversion, whereby one US Special Forces Soldier is equal to 100 times his own weight in Iraqi insurgents.

The most bad ass mother fuckers who are trained in the U.S. Military right next to the Delta force.

These guys actually seem to threaten who I am unlike a regular cop on the street.

Some are cold bastards with no emotion and the ability to destroy people in massive amounts.

These men can pick locks, blow shit up, kill tons of people, and run a ton of miles for days on end.

A common term referring to a soldier who is part of a special ops group, from the US Army's Rangers to the US Navy SEAL's. Counterterrorist units are also special-forces.

Umbrella term for the special operations troops in a military, typically those with better training and equipment, and who perform higher-risk and more secretive missions.

In US context, it applies specifically to the US Army's SF group, known to the public as the Green Berets, who specialize in behind-the-lines operations such as hit-and-run tactics, intelligence gathering and moreover, gathering the support of locals to train and support militias for counter-insurgency purposes.

As a US-specific umbrella term, it also applies to the Army Rangers (of which the late football star Pat Tillman was with), the Air Forces Pararescue Jumpers (PJ's for short), the iconic Navy SEALs, and the Force Recon Marines, who for all intents and purposes do the same job as the aforementioned SEALs.

An autistic kid with a gun of any type

The original name for the IJJI game, Soldier Front. It originated in Korea, but is available in Japan, China, Taiwan, Vietnam, and in America known as "Soldier Front"

-noun- A bowel movement that is completed in a short period of time and leaves a wake of olfactory destruction.

-adjective- To get in, get out, leave a path of olfactory destruction and no one knows you were the one that was in there.

1) A soldier that has completed the Special Forces Qualification Course with a specialty in medicine thus earning the 18 CMOS and the D identifier making him an 18D.

2) A medical genius in the fields of trauma care, trauma surgery, anesthesiology and clinical medicine. They also have a good knowledge and understanding of dental medicine, vetrinary medicine and optometry.

3) Often chosen over a P.A. or M.D. in the specified area by soldiers because of their extensive specialty training.