British SAS and their Recruitment, Selection and Training
https://specialmilitaryforces.blogspot.com/2017/11/british-sas-and-their-recruitment.html
The Special Air Service (SAS) is a special forces unit of the British Army. The SAS was founded in 1941 as a regiment, and later reconstituted as a corps in 1950. The unit undertakes a number of roles including covert reconnaissance, counter-terrorism, direct action and hostage rescue.
The corps presently comprises 22 Special Air Service Regiment, the regular component under the operational command of United Kingdom Special Forces, and 21 (Artists) Special Air Service Regiment (Reserve)and 23 Special Air Service Regiment (Reserve), which are reserve units under the operational command of 1st Intelligence, Surveillance and Reconnaissance Brigade.
The Special Air Service traces its origins to 1941 and the Second World War. It was reformed as part of the Territorial Army in 1947, named the 21st Special Air Service Regiment (Artists Rifles). The 22nd Special Air Service Regiment, which is part of the regular army, gained fame and recognition worldwide after its televised rescue of all but one of the hostages held during the 1980 Iranian Embassy siege.
Recruitment, selection and training
The regular elements of United Kingdom Special Forces never recruit directly from the general public. All current members of the UK Armed Forces can apply for special forces selection, but historically the majority of candidates have a Commando or Airborne forces background. Selections are held twice yearly, in summer and winter, in Sennybridge and in the Brecon Beacons. Selection lasts for five weeks and normally starts with about 200 potential candidates. Upon arrival candidates first complete a Personal Fitness Test (PFT) and an Annual Fitness Test (AFT).They then march cross country against the clock, increasing the distances covered each day, culminating in what is known as Endurance. This is a march of 40 miles (64 km) with full equipment scaling and descending Pen y Fan in 20 hours. By the end of the hill phase candidates must be able to run 4 miles (6.4 km) in 30 minutes and swim two miles (3.2 km) in 90 minutes or less.
Following the hill phase is the jungle phase that takes place in Belize, Brunei or Malaysia. Candidates are taught navigation, patrol formation/ movement and jungle survival skills. Candidates returning to Hereford finish training in battle plans and foreign weapons and take part in combat survival exercises, the final one being the week-long escape and evasion. Candidates are formed into patrols and, carrying nothing more than a tin can filled with survival equipment, are dressed in old Second World War uniforms and told to head for a point by first light. The final selection test is arguably the most grueling – resistance to interrogation (RTI), lasting for 36 hours.
Typically, 15–20% of candidates make it through the hill phase selection process. From the approximately 200 candidates, most will drop out within the first few days, and by the end about 30 will remain. Those who complete all phases of selection are rewarded with a transfer to an operational squadron.