United Kingdom Special Forces Selection United Kingdom Special Forces Selection is the selection and training process for members of the United Kingdom ' s three Special Forces formations : 22 Special Air Service , Special Boat Service , and Special Reconnaissance Regiment . Members of the SAS and SBS undergo common selection up to the award of a sand - coloured beret to SAS Troopers whereupon SBS candidates undergo further selection to qualify as Swimmer Canoeists and SAS personnel undergo further specialist training . Until the late 1990s candidates for the SAS and SBS underwent selection under the auspices of the prospective unit , the merger created efficiencies and encouraged a greater degree of interoperability between the units . Selection is reported to be one of the most demanding military training courses in the world with a reported pass rate of less than 10 % . In 2013 three soldiers died during a selection exercise . It is a test of strength , endurance , and resolve over the Brecon Beacons and Elan Valley in Wales , and in the jungle of Brunei , taking around 6 months to complete . Selection is held twice a year regardless of conditions . Personnel must have a level of prior regular or reserve military experience and for regulars must have at least 39 months of service remaining on completion of selection as well as not exceeding 32 years of age . Candidates are limited to a maximum of two attempts with personnel failing being " Returned to Unit " . Selection is broken down into a number of phases , beginning with a Briefing Course several weeks in advance of commencement . Special Forces Briefing Course ( 1 week ) . Over the week , potential candidates are briefed in detail on Special Forces employment and on the activities during selection . Candidates undertake a map and compass test , a swimming test , a first aid test and a combat fitness test . There are also numerous " DS walkabouts " and runs in the hills . Candidates will be notified of the likelihood of failure on selection and provided with a training programme to prepare for the process . Fitness and navigation ( 4 weeks ) . Based at Sennybridge Training Camp in Wales personnel are exposed to the Brecon Beacons and the Elan Valley , Wales where weather conditions are demanding , and unpredictable . Initial tests are common to the rest of the British Armed Forces with the Combat Fitness Test ( CFT ) , a run in under 9 minutes 30 seconds preceded by a minimum of 45 pressups and 55 situps in two minutes each . The first week of selection consists of runs in the Brecon Beacons , up and down hills with a loaded bergen . These exercises , such as the " Fan Dance " , are further complicated by navigation and map reading exercises . Navigation runs in small groups in woodland areas and night tab s follow shortly , steadily increasing both the physical and mental load on the prospective operator . Loads increase over the period , while the individual ' s personal weapon has to be carried unsupported ; candidates are required to keep the rifle in their hands as they climb slopes and jog down again . In the third week individuals navigate from a grid reference to other points on the map , in an exercise called " Point to Point " . Directing staff at each rendezvous ( " RV " ) require the candidate to indicate location before instructing the next reference point . The final stage of the " hills " phase of selection is known as " Test Week " which consists of six marches on consecutive days with ever increasing bergen weights and distances . The second to last day involves covering with a hand - drawn sketch map rather than a printed map . Test week concludes with " Endurance " , a 64 km ( 40miles ) march across the Brecon Beacons , completed in less than 20 hours loaded in excess of fifty five pounds plus water , food and rifle . Initial continuation training ( 14 weeks ) . This consists of detailed and realistic training in weapon handling , vehicle handling , demolitions and small unit patrol tactics . Jungle training ( 6 weeks ) . Jungle training is usually carried out in the thick rainforest of Borneo with candidates allocated to four man patrol s , each patrol supervised by a member of the Directing Staff ( DS ) . Damp and rain are persistent , potentially demoralising the candidate , and skin contusions , insect bites , cuts and blisters must be cared for due to the risk of infection . Training includes jungle survival , patrol techniques , navigation , boat handling , camp and observation post techniques , contact drills and medicine . The final test encompasses these skills , where all things that have been learned must be applied correctly in a tactical environment . Survive , Evade , Resist , Extract ( 4 weeks ) . Personnel undertake Survive , Evade , Resist , Extract training . The test stage for this training phase requires the candidates to undergo an evasion exercise , dressed in greatcoats to restrict movement and operating in small groups . A Hunter Force from the Special Forces Support Group provides a capture threat . All personnel are required to undergo a Tactical Questioning stage ; should a candidate reach the objective without capture he will still be subjected to this element .