Do you consider the term jarhead and other names for the different branches of service offensive?

Only when it’s used with the intent of being offensive. Much like grunt, it can go both ways.

My wife's brother joined the Navy in 2000. At that time I was a SSgt (E-6) in the Marine Corps. Even today we call each other jarhead and squid. It is all in jest.

Nope it's all done in love! I was also a police officer and we have a rivalry with fire fighters and it's all good!

I know several marines, active & retired or inactive. We joke back & forth about Army vs Marines. Its always in fun. I was Army ('Nam 67/68), my brother was Army (Col, ret.), my cousin was Army (Nam 65/66),and my son is currently Army (I'd brag on him except for security reasons). I also have kin who were Marine, Air Force and Navy. The thing is, we all proudly served and have earned the right to kid each other about our choices of military service, but just as was mentioned about siblings, "I'll pick on my brother, but don't you dare". There really are relatively few who have served, and those of us who have should consider ourselves a close Brotherhood. I especially love all my brothers who made it home from Vietnam. They and ,especially POWs and KIAs are the heroes.I didn't agree with former Sen. McCain's politics, but he was still one of my heroes. May God bless all of you who served and may he grant you his peace Through Jesus Christ the Prince of Peace.

We are all Brother's (and Sister's)-in-Arms and like any family, the nicknames fly. I smile when a grunt, anchor-clanker or leatherneck calls me wingut or zoomie, they've earned the privilege to do so. But that's a privilege reserved for a fellow Vet or one still in uniform.

Fellow vet to fellow vet never. I have a buddy who was Navy, and a brother as well, I was a Coastie, we bust each other mercilessly but if a civilian ever tried to join in, they got the stare.

My marine buddy stuck on al Saad with me once told me that jarhead is a term most marines will respond to in the same way as if you called him marine. He said if you ever wanted to start a bar fight with a group of marines, call one devil dog without permission.

I have told Marine, Sailor, and Airmen jokes for as long as I can remember. I yo dish it out you havr to be prepared to take it as well. It doesn't matter what branch you join - once you serve you become a member of the largest fraternity in the United States. And, once you become a member of our fraternity yo become our "Brother" or "Sister" and family will always heckel family.

you mean the likes of crayon eaters, window lickers, chair force, and lets leave the Coasties alone.
we may joke with each other, call us names and such but your still my brother/sister.
Notice I left the navy out of it because they are nothing but transport for marines.

that depends on who it is doing the name calling. Another military member or past military member, no particular problem. Someone who never served, ALWAYS offended.