To answer your question, in my opinion, probably none. We’ve definitely been involved in conflicts that have furthered or protected America’s interests, which in theory as citizens, we benefited from.
I would think that veterans and current service members deserve respect/gratitude for acting as a deterrent against external hostile entities that otherwise might be interested in ruining your day to day existence. They do jobs that I personally don’t want to do and I’m thankful they’re there and willing to do it. Have a safe and happy Independence Day!