Apart from soldier fitness (not gym fit) and your body type (and there are a few types) being able to cope with the selection process.You have to be a professional soldier (and all that this implies)so on and so forth. When all of the above has been achieved you can still fail selection. At the end ...

One better. In every single exercise when 21 and 23 where part of the TA pre-1991 (when there used to be joint exercises) and every single training course (when there used to be joint training courses) 23 always came top. One better. The wings are different to show 23's significance...http://www.mil...

Nearly all in 21 and 23 are ex regular infantry, TA Para's or Royal Marine reservists (RMR). My advice is join the RMR, if you can pass this selection stay the full four years. Then and only then try 23 selection (everything north of Birmingham is 23) To try 22 selection you have to be minim three y...