I'm stuck on ideas for future warfare for both human and aliens that would be practical. I'm trying to come up with efficient war vehicles and strategies for humans that would make sense in fighting aliens on planets. Currently, space battles are pretty much non-existent because of star-system tier to galaxy tier destruction weaponry, so if humans or aliens want to take a star-system or a galaxy without utterly destroying everything, they'll have to sneak up on them so they can't use the weapon without destroying themselves. Do you guys think that this is a realistic or practical reason? Does it make sense or not really? Planets and stars are still crucial to civilizations for energy, resources and likely living space to inhabit, so I'd imagine it would be a huge deterrent to tactics where people just simply blast everything out of existence. And simply destroying the atmosphere to kill the current inhabitants might not be as practical if you need it for your own people. The less advanced civilizations that are similar or on the level of the human civilization aren't that big of an issue concerning planetary warfare and it might make sense to use more or less current day technology ramped up with futuristic technology to fight them. But thinking about it, current day warfare tactics involve flying a F-22 jet fighter on a stealth mission to bomb some targets from a distance. That wouldn't be practical at all against a huge invading force that has machines that fire explosives that are as powerful as nuclear weapons in conventional warfare. What might be a viable strategy and what kind of vehicles/artillery weapons might be practical against such an enemy? The more advanced civilizations are pointless to fight as they're unstoppable and the humans usually just set off a Wreath to destroy that star-system or galaxy to deny them the energy and resources. They'll lose whatever they're after anyway.