 The marches consist of two based in the Elan Valley and three in the Brecon Beacons, prior to undertaking the long drag.Volunteers are also required to pass the UKSF swimming test that consists of high-water entry (10m), water entry (3m) wearing webbing and carrying rifle followed by a 25m swim and kit handout, treading water for 5 minutes followed immediately by a swim of 200 metres wearing combat 95.The test finishes with an underwater swim of 10 m including a retrieval of a small weight.