Earned

They also passed on the turmoil of war down to their offspring. Offspring born of war veterans have fight or flight embedded into their DNA. War changes a persons DNA, but I have no science to back that up.

Its not their DNA, its their psychological makeup.

I found a interesting article how trauma is passed onto offspring. If this is true, which I believe it is, the trauma from people who experienced war is unknowingly passed down from generation to generation. God bless those who have fought for our country, and god bless the families born to them.

Yes, but it's not passed through DNA. Its passed through behavior and psychological makeup (which is 80% environment).