Marine flying field, Miami, Fla.: De Haviland 4’s, Curtiss JN’s, Thomas-Morse scouts, and M-1 defense planes 118 Naval air station, Miami, Fla.: HS-1-L, and HS-2-L flying boats, and R-6 Curtiss seaplanes 24 Balloon Company, Quantico, Va.: N-9 and R-6 seaplanes 3 Caquot and kite balloons 4 Naval base No. 13, Azores: R-6 and N-9 seaplanes and HS-2-L, and HS-1-L flying boats 18 Northern Bombing Group, France: De Haviland 4’s and 9’s 177 At other times the following planes were operated by Marine pilots: At Philadelphia, Pa.: Curtiss JN’s 6 Curtiss R-6’s 2 Curtiss N-9’s 2 At Roosevelt field, Mineola, Long Island: Army land planes 12 At Gerstner field, Lake Charles, La.: Army land planes 12 At Cape May naval air station: R-6 and N-9 seaplanes 8 Total planes operated by Marine pilots 386 TRAINING OF OFFICERS AND ENLISTED MEN. During the war the Marine Corps selected and trained its own flyers and mechanics, and had its own aviation field and equipment. At the Massachusetts Institute of Technology, Boston, Mass., enlisted Marines selected as promising flying material and given the rank of gunnery sergeant, took a 10 weeks’ course in groundwork, and about 80 men a month were graduated. After ground graduation they did their actual flying at the Marine flying field, Miami, Fla. This course embraced preliminary, acrobatic, and formation flying, bombing, gunnery, and reconnaissance work, including photographing. Upon qualifying they were commissioned as second lieutenants in the Marine Corp Reserve Flying Corps. Marine flying candidates were all enlisted Marines, of superior physique, weighing from 135 to 165 pounds, and with at least two years’ college or university study to their credit. The age limits were 19 to 39 years. Marine Corps mechanics, riggers, and armorers were trained at the Marine Corps section of the naval school for mechanics, Great Lakes Training Station, Chicago, Ill., the course covering eight weeks, and at a similar school in aviation mechanics at San Diego, Calif. In December, 1917, 2 Marine officers and 10 enlisted men were sent to the Army balloon school at St. Louis, Mo., and later to Omaha, Nebr., for training. AVIATION STATISTICS.