The Space Force is presumed to be exactly like our current military. Over-the-top recruitment videos will only lead to utter disappointment, just like any other branch. "You'll get to see the world," the recruiter will promise, but we all know you'll probably just be seeing it from a desk back on Earth. Even in many years when the need for space infantrymen comes up, it'll still be filled with all the same BS that happens down here.
Think about it. There will still be NCOs and officers who will still need to bide their time until closeout formation. The only difference will be that it'll take place 254 miles above the Earth's surface. And how will latrines work? Who will clean them?!
You know the answer.
1. Literally cleaning the ship absolutely spotlessly
Remember those novelty "space pens" that you can find at souvenir shops? The joke on the back is that America spent a butt load of cash trying to get a pen that could write upside-down and with zero-G's but those crafty Russians just used a pencil. Hate to burst that bubble but no one uses pencils in space for a very specific reason.
Any bit of dust or flakes caused by just regular everyday things, like pencil shavings, could mess with electrical systems while it's floating around in space.
That's just from man-made stuff... then you have to worry about the stardust
2. Vacuuming all that stardust
Of course no one down here can see it, but space is actually pretty filthy. There's plenty of dust on the outside the atmosphere from when the universe was formed and we can't go around with an unclean space ship. Most of it is microscopic but NASA astronauts regularly have to clean the dust or else it gets everywhere.
Any spacewalk done will suck in plenty of that minuscule specs of dust whenever the bay-doors open. When the astronaut comes back into the oxygen-filled area, the dust will follow. And some poor space private will have to vacuum all that up.
You can't honestly expect lieutenants to clean up after themselves when there are privates available, now can you?
3. Police calling space debris
All of this is just to clean up the inside of ship — there's also the outside. Satellites and other man-made debris deteriorate eventually and even a 1cm paint flake could zoom low orbit faster than a bullet. Those flakes can rupture panels and cause all sorts of hell on the ship.
This problem is magnified with even larger pieces of debris, like a baseball sized scrap of metal hitting anything at 4.76 miles per second. To prevent Newton's Second Law (force is equal to the mass times acceleration) from obliterating everyone on board, it's up to the space privates to handle it.
I want this globe spotless or no one is being released.
4. Container organizing... but in zero Gs
At first, it seems like this would be so much easier in space. You wouldn't have to lift heavy things because it's near weightless now. And astronauts are notorious about taking only what they need into space. But that's the silver-lining. Trying to tie things down and organizing things to take up as little space as possible is the real problem.
A space private's Tetris skills will be checked as there isn't any room for open space.
Good luck finding that ONE serial number for the change of command layout.
5. Repairing the exterior of the ship
There is a diminishing return on enjoyment. The first time you go on a space walk, it'll be beyond your wildest expectations. Your 1,348th time going on a space walk to scrub the stardust off the window because the Colonel is coming won't be as great.
Even more high-stress would be making repairs on the spaceship. Any minor mistake and either you die alone or everyone gets sucked into the vacuum of space.
Imagine losing a wrench and sending it soaring into Earth's atmosphere.