He hadn't been old enough to fight in the last war.
He spent the next few years fighting in the civil war.
"I haven't seen him since he went off to fight in the war."
You'll fight in your war, if it takes a year or ten.
I didn't meet anyone who was fighting directly in the war.
They weren't old enough to have fought in the war.
All of you who are old enough fought in the war.
I came here to see if we fought in the same war.
"And now my son was sent to fight in someone else's war."
John Barry's family decided for him to stop fighting in the war.