It does not.

It is entirely possible and legal to enlist at 17, and the first day on base be given the keys to some huge ten ton truck and told to drive it across the country.

No mandatory training? In Finland before they allow conscripts to do anything they have to spend at least week or two if not month or two on training.

"Basic training" would happen - but that may or may not cover driving the trucks. The above scenario happened to a person I know when they enlisted (though they were 18 at the time).