© licensed to London News Pictures. WALES, UK  25/04/11. The SAS is facing a recruitment crisis because soldiers do not have time to train for demanding selection tests, the head of the infantry has warned. Brigadier Richard Dennis said it needed better quality applicants. FILE PHOTOGRAPH DATED 14/01/11. SAS recruits taking part in 'selection' over the Brecon Beacons and Elan Valley in Wales. With a reported pass rate of less than 10% it is considered one of the toughest military selection processes in the world. . Please see special instructions for usage rates. Photo credit should read Andrew Chittock/LNP