AD Astra: Spec OPS

Sometimes when we talk about alien invasion we tend to think about Giant Lizard, Amored plate monster, Kaiju invasion or XcomLike Alien trying to enslave all of US. But what if, the aliens are just like US.

No immortal warrior, No Super evolved gold who become stronger because of sun exposition, just regular humans just like US. Regular humans with advanced Civilization and different belief but still, they remains excalty like. Like If We invade Earth in 1456.

What if they prefer to Observe US rather than intervene, but some kind of event force them to interact with our World. Well this the type of story i want to provide.

PS: I am a military nerd (if you'd read my others story you know) Even if i try to portray it as Realistic the story remain pure fiction. But I will be glad if people with actual Knowledge in the field can help