Not only will dumping the social engineering make the armed forces more capable of doing their real job, more people would be willing to enlist. As it stands now, I would not want to see the wholesale conscription of 18 year olds for indoctrination, followed by being sent into combat with substandard training in real military matters.
A draft may be required some day, but not now and I can’t see that one will be required in the foreseeable future.