What is the proper way to address NCOs in different branches?

In the Navy E4 TO E6 are addressed as Petty Officer. E7 Chief E8 Senior Chief E9 Master Chief. Warrants- Mr or by specialty ie Bosun, Gunner, etc. by those junior. As Warrant or Mr. by officers.

I wish a recruit would call me “big sarge” ! Much less a brand new private to the unit, you had better put some time in first !

Autocorrect victim.

When I was in, I would occasional my work with other services and always addressed Marine and Air Force NCO's as sargent and Navy Petty officers as chief. I know the sailors weren't chief in till E7 but found their insignia a little baffling, so I gave them the benefit of the doubt and never had one of the other services NCO's complain. Guess they all just assumed I was a dumb grunt and didn't know better. (Grunt medic actually). No commission, no warrant, no "sir"from me.

You do not call an NCO in Marine Corps sir you call them by their rank and last name

Chief if E7 -E9. Most E8s answer to Senior. (Senior Chief). Master Chief is usually said as Master Chief... but we all will answer to plain old Chief. E4 -E6 is Petty Officer E3 and below will be Seaman, airman, fireman or construction man depending on the color of their stripes. Confused yet?

In the Navy E-1 to E-3 are dressed as seaman recruit Seaman Apprentice or Seaman or Aaron recruit Aaron Apprentice Airman and so on e4 through its 6 or just as petty officer he sevens are addressed as chief the 8 Senior Chief E9 Master Chief in an informal setting you may address the Senior Chief or Master Chief as senior or Master although I've never felt comfortable with those terms

Recruits in Marine Corps Boot Camp will always refer to Marines (enlisted and officer) as sir or ma’am. Other than that, you call enlisted ranks by their current rank. E7 in the Marines would be Gunnery Sergeant or Gunny.

As mentioned above, during Marine Corps boot camp. Recruits will address their drill instructors as Ma’am/Sir, until the receive the eagle, globe and anchor(EGA). For an E-7 in the Marines they will be addressed as Gunnery Sergeant or Gunny, but that’s only if that E-7 allows it. In the Marine Corps we have two ranks for E-8(1stSgt and MSgt). The rank of 1stSgt is an administrative billet, and MSgt is an operational MOS billet. The rank of E-9 also has two billets (SgtMaj and Master Gunnery Sgt).

In the Navy Petty Officer 3rd class, 2nd class, and 1st class are addressed as Petty Officer and their last name, Senior Petty Officer ratings are addressed as Chief, Senior Chief, and Master Chief.

USAF. Sgt Jones. Higher ranks like Chief Master Sgt, Chief Jones. if you are meeting an Army NCO on duty, Sgt Jones. Higher ranks Sgt Major Jones. Navy Chief Jones. Marines as has been stated. Coast Guard as Navy.

I don’t know about other branches but in the Army E5-E7: Sergeant, E8 without diamond: Master Sergeant, E8 with diamond: First Sergeant or Top, E9 Sergeant Major reguardless of CSM or not.

Hmmm... there was a time in Army BCT that they covered rank identification of the other branches and how to address them. Do they not teach that anymore? Wouldn’t surprise me if they don’t these days.

I'm the Army, we called any E - 5 thru E - 7 "Sergeant" .
E - 8, if they were a Master Sergeant, it was still "Sergeant" . If a 1SG, it was either "Top" or "First Sergeant", depending on their preference.
Any E - 9 was "Sergeant Major" .
I always called other services by full, proper rank. Never hurts to CYA.

Coast Guard and Navy:
E-1 through E-3 = last name.
E-4 through E-6 = "Petty Officer."
E-7 = "Chief."
E-8 = "Senior Chief."
E-9 = "Master Chief."

By their rank. Never wrong.

It’s easy, learn the ranks in the other services and be respectful.

Marine Corps Recruits call anyone who is not a Marine Corps Recruit by Sir/Ma’am. That would include SNCO’s, NCO’s, non-rates, Navy Docs, Civilians, and even a brand new Pvt who just graduated Recruit Training that day. After that, it’s the FULL RANK from Cpl to SgtMaj. Some E7’s will go by Gunny, and some will make you wish you were never born just for trying it. Same goes for E8’s with Top (MSgts only, not 1st Sgts) and Master Guns for those E9’s, best not to try it unless your sure their OK with it.

Also, all officers from WO to Gen rate Sir/Ma’am from all enlisted. I’d only say their full rank and name if you differentiate them from another officer within earshot, and follow it up with Sir/Ma’am.

CO is Skipper. XO is Mister. 1Sgt is Top. Gunny is Gunny. Squadmates are whatever trashy names you can think of.

Just don’t confuse a SGM with a CSM, at least not in the US Army... Yes, they’re both addressed as Sergeant Major (E-9’s) but one of them will be quick to explain to you the difference of position... At least that’s how it was in the US Army, Infantry. Ha!