the base 4, for fitness, swimming, proficiency and
orienteering.
the fitness one, depends on what u got for your Nafa. theres
bronze, silver n gold.
swimming, u have to pass a swimming test.
proficiency, u have to go thru a profi test that includes arms
drill and technical handling, i think.
orienteering, u need to pass an orienteering test, which basically
involves map reading and running to check points within a time
limit.
thats what i remember from my time in NCC over 5 years ago. dunno
if the info is still current or not.