Yes even the loving and caring brothers sometimes fight with each other. It doesn't matter how much they get along. Theirs always that cranky moment in a boys day where they are maybe tired or just cranky. Maybe they had a long car ride. Maybe they've been out in the sun all day. Well if you ever experience this type of behavior don't split them up. Or send them to their room. Instead
in this situation you have to take precaution at this stage the child is vulnerable
once you have done that only then can you bring the both of them together. Talk to both of them but never do he said she said with them. It only makes it worse keep the private conversation anonymous. Instead you address the situation for example
"Daytona I saw you hit Nevada you both say that one of you aren't playing fair. And both of you know it's not nice and we should all play fair. So Daytona how can we show your little brother how to play fair"
Make them show you they are the teacher in this case you are the student.
No matter the scenario there is a way around it you should never go into disciplinary actions right away their is a time when you should and should not discipline the boys