Oh look, this garbage again.
"The youth don't know how to use a slide rule or an abacus! They can't shoe a horse! Education has FAILED! The young are stupid!"
It's all bullpuckey, of course. A kid graduating from high school today is better educated than a high school graduate at any point in history. There's more material covered, they've got a better understanding of it, they're better prepared than ever before. Education standards are higher than ever.
But schools don't have time to teach obsolete things like slide rules and map and compass navigation.
And yes, obsolete. For the vast majority of people, navigating with a map and compass is not a useful skill. Can I do it? Sure, I'm old. But do it? Nope, haven't in decades. I used to stop at welcome centers when I crossed state lines to pick up the latest map. I haven't bothered since the '90s.
If the army wants kids to know it they're going to have to teach it, not just test for it.