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MILITARY RANKS

Military titles are capitalized and abbreviated before the full name on first mention, thereafter capped and spelled out before the surname:
            Gen. Reg Murphy, General Murphy, Gen. Reg Murphy (Ret.), the general
            Pfc. (or Pvt.) Jennifer Reek, Private Reek, the private

Without a name, a title is spelled out and lowercased: the general, the private.

When a military rank is used with a title of nobility or royalty, spell out the military rank: Admiral Lord Mountbatten.

Although the military puts the entire abbreviation in caps with no periods, it is standard for nonmilitary publications to use forms more familiar to readers, such as those in the Associated Press Stylebook or the Chicago Manual of Style.

After a name, USA, USAF, USMC, USN are set off with commas:
            Lt. William T. Douthitt, USN, presided.

First Lieutenant, First Sergeant:
Use full name on first mention:
            1st Lt. Marisa Larson.

Thereafter:
            Lieutenant Larson, the lieutenant
            the ship's first lieutenant.

At beginning of a sentence spell out first:
            First Lt. Marisa Larson

Military ranks are abbreviated or not, according to the following guide:


With full name or initials


With last name only

ARMY

Gen. of the Army, Gen., Lt. Gen., Maj. Gen., Brig. Gen.
General

Col., Lt. Col.
Colonel

Maj.
Major

Capt.
Captain

1st Lt., 2nd Lt. (First Lt. or Second Lt. at beginning of sentence)
Lieutenant

Chief Warrant Officer, Warrant Officer
Warrant Officer

Sgt. Maj.
Sergeant Major

1st Sgt. (First Sgt. at beginning of sentence), Master Sgt.,
             Sgt. 1st Class, Staff Sgt., Sgt.

Sergeant

Specialist
Specialist

Cpl.
Corporal

Pvt., Pfc.


Private
NAVY and COAST GUARD

Fleet Adm. (Navy only), Adm., Vice Adm., Rear Adm.
Admiral

Commodore
Commodore

Capt.
Captain

Cmdr., Lt. Cmdr.
Commander

Lt., Lt. (j.g.)
Lieutenant

Ensign
Ensign

Chief Warrant Officer, Warrant Officer
Mr.

Master Chief Petty Officer
Master Chief

Senior Chief Petty Officer
Senior Chief

Chief Petty Officer
Chief

Petty Officer 1st Class (or 2nd or 3rd)
Petty Officer

Seaman (includes Seaman Apprentice and Seaman Recruit)


Seaman
MARINE CORPS
As for Army, except:

Chief Warrant Officer, Warrant Officer

Mr.

Master Gunnery Sgt., Gunnery Sgt.

Sergeant

Lance Cpl.


Corporal
AIR FORCE

Gen. of the Air Force
General
As for Army, except

Chief Warrant Officer

Mr.

Chief Master Sgt.

Chief

Senior Master Sgt., Tech. Sgt.

Sergeant

Airman (includes Basic Airman), Airman 1st Class
Airman

See also:      AIR FORCEARMY, COAST GUARD, MARINE CORPS, NAVY
                        armed forces, armed services, special forces
                        MILITARY UNITS
                        Ranger, Rangers, SEAL, SEALs
                       TITLES OF PERSONS.