Serving as a model for special forces around the world, the Special Air Service (SAS) lead the way. Precious little publicly verifiable information exists on the SAS, as the United Kingdom Government does not usually comment on special forces matters due to the nature of their work.
But here is what we know about them:
1) The Special Air Service comprises three units: one Regular and two Army Reserve (AR) units. The regular army unit is 22 SAS Regiment and the reserve units are 21 Special Air Service Regiment (Artists) (Reserve) (21 SAS(R)) and 23 SAS Regiment (23 SAS(R)), known as the Special Air Service (Reserve) (SAS(R)).
Each Regiment has squadrons. 22 SAS Regiment for example has four operational squadrons: A, B, D and G. Each squadron consists of approximately 60 men commanded by a major, divided into four troops (each troop being commanded by a captain) and a small headquarters section.
Troops usually consist of 15 men, and each patrol within a troop consists of four men, with each man possessing a particular skill: signals, demolition, medic or linguist in addition to basic skills learned during the course of his training. The four troops specialize in four different areas:
- Boat troop – are specialists in maritime skills using scuba diving, kayaks (canoes) and Rigid-hulled inflatable boats and often train with the Special Boat Service.
- Air troop – are experts in free fall parachuting, High Altitude-Low Opening (HALO) and High Altitude-High Opening (HAHO) techniques.
- Mobility troop – are specialists in using vehicles and are experts in desert warfare; they are also trained in an advanced level of motor mechanics to field-repair any vehicular breakdown.
- Mountain troop – are specialists in Arctic combat and survival, using specialist equipment such as skis, snowshoes and mountain climbing techniques.
In war SAS are intelligence gathering units. They go behind enemy line to coordinate offensive operations.
See video: British SAS Documentary https://www.youtube.com/watch?v=XQHnXy8lMqw
See video: SAS – Operational Survival Secrets: Behind Enemy Lines, Weapons & Tactics https://www.youtube.com/watch?v=IRCBzsii4Uk
See article: Number of SAS soldiers to quadruple over next five year – December 21, 2014 -SAS to get 1,500 more troops for the war on terror http://www.dailymail.co.uk/news/article-155593/SAS-1-500-troops-war-terror.html#ixzz3MZGwO3OD