Whilst the primary role of a military assault course is to improve fitness, they are also used for the assessment of personnel to see if they are suitable for a specific role. For example in the British Military potential paratroopers have to complete the British Army’s Parachute Regiment’s Trainasium, as one of the test, to be allowed to progress to Parachute Training, and the Royal Marine’s Bottom Field Assault Course has to be completed as one of the test for the award of the Commando Green Beret. Both of these assault courses have obstacles which provide a physical and psychological challenge to those completing them, the Trainasium has a lot of high obstacles and Bottom Field include a lot of obstacles with water. The German Army's Einzelkampferlehrgang (Individual Battle Course), a combat survival course, uses a timed assault course as one of its entry test. For the Basic Einzelkampferlehrgang Course it must be completed in 2 min 15 sec, and for the Advanced Course in 1 min 50 sec.