[Edwin was born in 1900, died 1916, and while he's been a ghost until 2024 and seen any number of things that are by and large hidden from the eyes of most humans... people colonising Mars is very much still a far away dream. He looks genuinely surprised and is quickly trying to think how many more questions he might manage to have answered before he runs the risk of Cain shutting him down again.]

I... don't know where to start. I suppose I've come to more or less accept that many people here come from different worlds than I could imagine, but being both so similar and markedly different is fascinating. I wonder if there'd be any way to tell if you're from the future or a different version of Earth entirely?

Who is the military fighting? I imagine there must have been a reason for you to join.