 Selection is broken down into a number of phases, beginning with a Briefing Course several weeks in advance of commencement.POBC and SFBC are designed to give officers and ratings/ORs interested in volunteering for Service with UKSF a clearer understanding of what is involved, what UKSF expects of its officers and soldiers and how to prepare properly for UKSF Selection.The POBC or SFBC are not a method of pre-selection nor is there any obligation to attend a subsequent Selection Course by individuals.