If this national service thing actually happened (which of course it won’t) then the easiest way for young people to sabotage it would be for every single 18 year old to opt (nay, to demand they be given) a year’s military service. Current UK standing army: 100,000. Number of 18 years olds: 720,000.
excellent idea, it will keep them off the roads as there is nothing so irritating as a new teenage driver. The roads will be safer, we will all be safer... oh wait we would be giving them guns ...