Personally, I think everyone, male and female, should be made to serve two years in the military from the age of eighteen to twenty and then be obligated to answer the call to arms for a further ten years afterwards
Singapore has it already for males where everyone has to go through military training. They have the option to join and I think this is good to learn discipline. The option to come to Australia by joining the armed forces is a good initiative.
Many countries have it and the youth doing it gets a lot of benefits. I think there's a way to make it more attractive, discounts on tertiary education for instance, assistance with home ownership which is a massive problem here (the cost of housing is extremely high). With a few things like that, I believe it could be quite palatable for the young people.