I’d like to point something out. Time is not as concrete as you think. You could have been in the gulf war in a past life. Perhaps “past” life isn’t the right terminology. Maybe we should say “Other lives” or “Alternate Lives”. My point is that just because you were born before the gulf war, doesn’t exclude you from having an alternate life at the same time. The spirit world is not bound by our rules, including what we call time.
Let’s look at it another way. If we say that heaven is beyond time, that it has no past, present, or future, then when you die, when do you get there? You could say that everyone gets there at the same time, or that you are already there, that you are both dead and alive at the same time. Perhaps you have multiple alternate lives at this very moment. Who is to say we are limited to one at a time?