So dad...

I've always wanted to know, but I don't know how to approach the subject. My father has fought in three wars but I've never asked him about it.

"Uhhh dad, tell me all about your experiences. Where did you fight? When did you fight? What unit were you in? Did you kill anybody? Did any of your mates get killed? Did you get wounded? What effect did it have on you?"

and on... and on... and on...

Is it ok? Should I open it up with him? I'm really curious and I don't know how to approach it.