A. Air Service Commissioned Insignia. Metal. 1. R.M.A. (obsolete) Airplane Pilot, I.M.A., M.A. 2. R.M.A. (obsolete) Dirigible Pilot, I.M.A., M.A. 3. Aerial Observer, Aerial Gunner, Aerial Bomber. 4. Air Service Insignia worn on collar.

B. Air Service Enlisted Insignia. Cloth. 1. Enlisted Pilot. 2. Aviation Mechanician. 3. Balloon Mechanician.

C. Naval and Marine Air Service Commissioned Insignia. Airplane Pilot. Kite Balloon Pilots.

D. Naval Air Service Petty Officers' Insignia. 1. Chief Quartermaster. 2. Carpenter's Mate, 1st class. 3. Machinist's Mate, 2nd class.

E. U. S. Aerial Mail Insignia.

F. Approved Design for Marking U. S. Government Aircraft.
G. Design used by U. S. Air Service Airplanes in A. E. F.

a J.M.A., but in time of war any officer or enlisted man who especially distinguishes himself in active service may be so rated.

Balloon and Airship.

RESERVE MILITARY AERONAUT (R.M.A.), Under Act of June 3rd, 1916, after complying with certain tests and practical work, balloon and airship pilots can be rated as such. But none was ever so rated.

DIRIGIBLE PILOT. Rating established under Army Regulations, October 16th, 1919, for officers of, detailed in, or attached to the Air Service, who have demonstrated that they possess the required qualifications.

JUNIOR MILITARY AERONAUT (J.M.A.), Same as under Regulations of November 16th, 1917, above.

MILITARY AERONAUT (M.A.), Same as Military Aviator.

Airplane.

OBSERVERS

AERIAL OBSERVER is the rating given the graduate of a school of aerial observation.

Balloon and Airship.

Same as above.

Dirigible.

No provision for rating of dirigible observer.

GUNNERS

AERIAL GUNNER is the rating given the graduate of a school of aerial gunnery, either in airplane or airship.

BOMBERS

AERIAL BOMBER is the rating given a graduate of a school for aerial bombing, either in airplane or airship.

R.M.A.'s (Airplane Pilots and Dirigible Pilots), J.M.A.'s and M.A.'s receive 25, 50 and 75 per cent. increase in pay of grade respectively, when on flying status. Aerial Observers and Gunners receive 25 per cent. increase in pay when on flying duty.

Enlisted

ENLISTED PILOT

Same tests prescribed as for Airplane Pilot.

AVIATION MECHANICIAN 1

A rating given to enlisted men who are non-commissioned officers above the grade of Corporal.

Ratings given after competitive examination, but at no time shall number so rated exceed 15 per centum of the authorized strength of the Air Service. Examination will be technical as well as practical and will include maintenance and repair of airplanes, and the operation, maintenance and repair of aeronautical engines. A 50 per cent. increase in pay of grade is allowed to men holding such rating.

BALLOON MECHANICIAN 1

Same as aviation mechanician, with the exception of theory and practise. Ex1 Not necessarily flying personnel but may be and frequently are put on flying status.

Manufacturers Aircraft Association's Chart showing operating parts of an airplane.

amination covers the rigging, repair and maintenance of balloons. Methods of hydrogen production and aeronautical motors if the rating is sought in an organization operating airships.

Enlisted pilots, Aviation and Balloon Mechanicians on flying status, receive. 50 per cent. increase in pay while on flying duty.

U. S. NAVAL AIR SERVICE

Following are the ratings of the flying personnel in the Naval Air Service:
NAVAL AVIATOR (N.A.)

NAVAL AVIATOR, Seaplane (N.A. (S.))

NAVAL AVIATOR, Dirigible (N.A. (D.))

KITE BALLOON PILOT (K.B.P.)

In the nomenclature used by the Navy "aviator" indicates the pilot of any power aircraft.

U. S. AERIAL MAIL SERVICE

Following are the ratings of the personnel (flying and non-flying) of the United States Aerial Mail Service:

IV

**Temporary rank only.

years
Sub-Lieutenant