I did my National Service in the Army between 1960 and 1962. The question of using NS to instil a bit of self-discipline into young men was current then. I was told, by an officer, that the purpose of NS was not to straighten out potential bad boys; it was there to provide a defence force for the country. It did me some good, however. Not that I was a bad boy, just the opposite, but I learnt how to accept other people's faults and how to get along with them. By the way, there was no entrance exam for National Servicemen. An entrance exam implies that the candidate actually wants to join, but I and my mates were all conscripts, so nobody asked us for our opinions!