We need more people who are willing and able to fight. Obviously everyone hopes they will never need to do it, but the world is not a safe place, and if we remain under-resourced militarily we will be at risk of attack.
I don't see this as remotely the same as the old compulsory NS scheme - what is it that makes you say that, Magenta?
This is from the article in the link - there is no mention of compulsory activity, and the scheme would not place the young people on active service. Nothing like the old NS at all.
After the scheme’s launch, the government plans to expand it to more than 1,000 per year, according to the i paper. It would not involve deployment to active operations, and there would be no obligation to stay in the military after completing the scheme, as it aims to teach transferable skills that can be used in other industries.
Currently, the forces sponsor students on all sorts of degrees. Their fees are paid in return for a spell in the branch of the forces they sign up to - if they leave before their time is up they have to repay the money. This is not much different from that, is it? I am very much in favour of free education, but see no harm in expecting something back. Not money, as some have so much more than others, but service of some sort, whether it is military or civilian.
Modern warfare would be different from the old way, which involved soldiers being posted to fight. As we are a nuclear power, the chances are (as for as I can tell) more likely that we would suffer disruption of all sorts of systems, and we would need people 'on the ground' who are capable of stepping in to ensure that the population has access to food, electricity, water etc, and that communication systems are kept live, as well as people who can defend the country with guns and other weapons.
A scheme like this would help us to achieve a sort of home guard who would have the skills the experts need. It would also help people to find careers, as it would show initiative and a sound skills base - a bit like a D of E award or those schemes where people who can afford it go to exotic places in their gap year to volunteer, and hope it advantages their university applications. This would have the advantage of being open to a wider section of society, as there would be some sort of salary attached.
The Devil will be in the detail, as always, but at first glance it looks like a good idea to me. If they took old crocks I might be tempted to sign up.