Crazy jobs program!
With that said, and I say all this as a career US Army officer, I think our advantage in land warfare is much more narrow than our advantages in sea and air power[1]. And the constitution does give Congress the power to simply "provide and maintain a navy;"
[1] For that matter, our Army's greatest advantages probably stem from our sea and air power. We can deploy anywhere in the world and be sustained by sea and air. The Army's own aviation branch is larger and more powerful than the air forces of most other nations, and we are very good at employing air fires.
Two memes from people who don't think very hard about the situation.
I mean I want to believe as much as the next person that it's to "ensure stability in $REGION" or to "provide aid to starving children" or whatever spin you see from time to time.
I also think that human suffering is a zero-sum game. It's trite to keep repeating it, but in the US, we spend trillions on the military but refuse to pay for our citizens medical needs (or homeless, or other $HUMANITARIAN_THING). It's impossible to measure, but I suspect that the slow, steady burn of our own citizens from this inequality could easily rival the suffering and death from having a skirmish or small war in $DISTANT_REGION.
I wish nobody wanted to move to UT I could've stayed in the state, but that stupid California money with the stupid tech bros came in and now it's freaking packed.