Which branch of service has the best professional relationship between officer and enlisted ?

definitely not the Navy. Too much of a caste system going on there.

I have only served in the Corps as an Officer. That being said, having been out of the military since 2005 I have worked with people from both Officer and Enlisted from every branch. This is an inevitable point of discussion in some form or fashion when eating meals together on the rig.

It basically boils down to how the junior member chooses to interact with the senior member. When I was on active duty in the late 90's in the Air Wing, we relied on the enlisted Marines to be subject matter experts. The Infantry did this as well, but focused much more on enlisted being "labor" for the vairous requirements.

Professionalism and discipline are a huge "thing" in the Corps. This is something that no matter where you go, someone WILL instruct you on the proper courtesies if you fail to render them.

That being said, if the junior member did not try to be "buddy, buddy" with the senior, the interactions were generally professional and most times collegial. We all were working for the good of the unit and trying to accomplish the mission at hand.

That being said, I have heard stories about service members going out and drinking with their officers and such. I blame the officers and would have had some serious ass chewings if they were my officers. As it was I had 2nd Lieutenants who thought it was OK to fraternize in uniform, on base, with opposite gender enlisted because they weren't in our unit.

All of it boils down to the type of leadership that was illustrated time and again in the HBO Series "Band of Brothers." I was never more touched as when a former enlisted Marine sent me an email to share some good news about his family and he mentioned how he and his other "Lance Criminals" always knew that I wanted them to succeed.

As an officer, if your troops know that you are loyal to them, they will kill themselves to perform better than every other unit. Simple things like volunteering for night ops when it was hot and sunny at CAX or WTI so they could sleep during the day in the A/C went a long way. Always making sure that there was at least ground coffee stashed somewhere in the unit's containers and all we needed was hot water because the Captain had filters, that kind of stuff always served me well.

Take care of your troops, model the behavior you want from them, and remember that they ALWAYS eat before you. That was my golden rule and I never had a single problem.

I think it a individual unit standard. Some units have great relationship between officers and enlisted and others don't. The command teams create this atmosphere. I have been in both situations. However I can only speak from an Army stand point. I think the relationship between officers and enlisted has become more more relaxed.