Hello,

I'm an author writing a historical fiction (set just after the Civil War) involving a Marine. In the story, said Marine meets a retired Naval Officer and they share some terse words. This leads the daughter of the Naval Officer to ask her father why he acted that way and I'm trying to come up with his response.

I've heard that the other forces aren't too fond of Marines and wonder if

1. If there's any truth to that statement
2. If it's true, why would two members that are under the same branch feel friction?

Any and all help would be appreciated, please and thank you.