I'm writing a military short story set in WWII, but every time I write some conversation between soldiers, it sounds sooo damn trite, I can't stand it. On the other hand, it might be how they talked realistically back then. So I guess my real question is: is it alright to use cliched dialogue if it was realistically used back then? Some examples are like: "Yes, sir." "You understand me, private?" "What the hell are you doing soldier?" "Are you disobeying a direct order?" "Don't die on me soldier, stay with me." "I'm hit!" Also any sentence ending in "sir" annoys the shit out of me. I try to change it up and get the soldiers to say something unique, but it just sounds odd and unfitting for the time. What do you guys think? How would you handle it? Any insight is appreciated.