Signal Corps

Jones entered active duty and was commissioned as a second lieutenant in the 14th Cavalry. He performed troop duty at Fort Clark and Marfa, Texas from September 14, 1912, to December 2, 1913, when he volunteered for pilot instruction. Jones was detached to the Aeronautical Division, U.S. Signal Corps and assigned to the Signal Corps Aviation School at North Field in San Diego, California, on December 5, 1913.

He was taught to fly by civilian instructor Oscar A. Brindley^[9] and assigned to the 2nd Company, 1st Aero Squadron on August 5, 1914. On August 19, he earned his rating of Junior Military Aviator (JMA) and was immediately placed on flight status.^[4][10] Congress expanded the air arm into the Aviation Section, U.S. Signal Corps in July 1914, and Jones remained assigned to the 1st Aero Squadron until September 23, 1915, when he returned to MIT for a post-graduate course on aeronautical engineering, the first such course ever,^[11] graduating on June 7, 1916. While at MIT, Jones served with both Milling and Captain Virginius E. Clark on the Technical Aero Advisory and Inspection Board in April and May 1916, testing aircraft and balloons at the Curtiss Aviation School in Newport News, Virginia, for possible use in Mexico.^[12]

During 1915, Jones set two flight duration records: for an aviator alone with a flight time of eight hours and 53 minutes flying S.C. 31, a new Martin TT tractor airplane, on January 15,^[13] and for an aviator and two passengers with a flight time of seven hours and five minutes flying S.C. 28, a Burgess H with extra fuel tanks, on March 12, both at North Field.^[14] For these flights, Jones received the Mackay Trophy.^[15] On July 2 at San Diego, he became the first army pilot to execute a loop and stall an airplane without crashing, and on December 12, to execute a tail spin, flying S.C. 30, a Curtiss J tractor on both flights.^[4]

Jones and First Lieutenant Thomas D. Milling, while on temporary duty from mid-April to late May 1915 at Brownsville, Texas, flew the first United States Army aerial reconnaissance mission under combat conditions^{[n 1]} on April 20, 1915.^[16] Using one end of the cavalry drill field at Fort Brown as a landing strip, the pair flew S.C. 31 to observe for movements of Pancho Villa, with Jones piloting and Milling to record the location of Villa's troops.^[17][18] Their morning flight was uneventful, but on their afternoon sortie, despite being on the American side of the Rio Grande, they were fired upon by at least one machine gun, the first time an American military pilot had ever come under fire.^[17][18] Jones climbed to 2,600 feet (790 m) and returned to Fort Brown with both men unscathed.^[17] After landing, Jones taxied S.C. 31 into a ditch at Fort Brown and damaged it beyond repair; the chief of the Aviation Section refused to replace the aircraft until pressured to do so on May 1.^{[19][n 2]}

On July 26, 1915, Jones and the 1st Aero Squadron moved by train to Fort Sill, Oklahoma, to work with the field artillery. In August, Jones was part of a detachment of two planes and four pilots sent to the Mexican border at Brownsville. On September 5, the detachment commander, First Lieutenant Joseph C. Morrow, was severely injured in a crash of one of their Curtiss JN2 airplanes, making Jones acting detachment commander. He promptly filed a report that the heavy, underpowered JN2s were too inherently dangerous to use as military aircraft, and that the artillery officers they were to train as observers had refused to fly with them. As a result, the JN2s were grounded on September 13 by the commanding general of the Southern Department,^{[n 3]} and in January their use discontinued by the Aviation Section.^[20]

Upon completion of his engineering course, Jones returned to the Aviation School, where he was promoted to first lieutenant, Cavalry, on July 1, 1916, and transferred in grade on the same date to the Field Artillery when an increase in the peacetime strength of the army authorized by the National Defense Act of 1916 resulted in the creation of 15 new regiments.^[4] At San Diego, his duties included instruction in aeronautical theory to pilot candidates, engineering support for the 1st Aero Squadron in Mexico with the Punitive Expedition, and Officer-in-charge of Engineering and Repair.^[3][21]

World War I and the Air Service

While still on duty at the Aviation School, Jones received a promotion on May 15, 1917, to captain, Field Artillery, in the first wave of officer promotions following the entry of the United States into World War I. At the beginning of June, he reported to the Office of the Chief Signal Officer (OCSO) in Washington, D.C. for temporary staff duty assisting Major Raynal Bolling in standardizing airplane specifications for the aviation services of the Army and the United States Navy preparatory to Bolling's mission to Europe on behalf of the Aircraft Production Board.^[3]

On June 30, he reported to the newly leased aviation field at Mount Clemens, Michigan, soon renamed Selfridge Field, where he organized and commanded an aviation school.^[4][22] On September 27, after reaching the legal requirement of three years' pilot experience as a JMA, he was awarded the advanced pilot rating of Military Aviator, one of the first in the Aviation Section to do so. His duties at Selfridge continued until October 23, 1917, when he received a temporary commission as lieutenant colonel in the Signal Corps to act as an observer for the OCSO during an inspection tour of aviation schools in the United States and Canada. On November 30, he returned to Washington to assume the duties of Chief of Air Service Training in the OCSO until April 22, 1918, when the Division of Military Aeronautics (DMA) was created to remove aviation from the purview of the OCSO. He was immediately sent to Europe to observe the training methods of British, French and American aviation schools.^[3][4]

Jones returned from Europe on June 12 and was assigned to the office of the Director of Military Aeronautics. In his absence, the DMA had replaced the Aviation Section as the nation's air arm when President Woodrow Wilson issued an executive order on May 20 removing all military aviation activities from the overtaxed Signal Corps, and then itself had been merged with the Bureau of Aircraft Production as the Air Service. As an indirect consequence, Jones reverted to his permanent establishment rank of captain when his Signal Corps commission was discharged on July 9. His new duties were with the Engineering Division at Wilbur Wright Field, Fairfield, Ohio, testing and evaluating new aviation equipment. On November 4, he was again promoted to lieutenant colonel (temporary, Air Service) and assigned as officer in charge of all test and evaluation there.^[3][4]

In December 1918, with the war ended, Jones became commandant of the aviation school at Wilbur Wright Field until December 1919, when he was transferred to the Executive of the Director of Air Service in Washington as an Engineering Representative, with membership on the Joint Army and Navy Board on Aeronautics. On March 15, 1920, the wartime temporary promotions of Air Service officers expired, and Jones reverted a second time to his permanent rank of captain.^[3][4] Jones transferred from the Field Artillery to the Air Service on July 1, 1920, the date that the Air Service became a statutory combatant arm of the line, commissioned as a major.

He then went on an extended leave of absence of three months in New York City "trying out a position in civil life." On July 3, the designations for all aeronautical ratings were changed and Jones received a new rating of Airplane Pilot, which also qualified him for the rating of Airplane Observer.^[23]

Returning to his military duties in October 1920, he completed his assignment at the headquarters of the Air Service in April 1921. He was sent to the Philippines, arriving in July 1921, to serve as Air Officer, Philippine Department at its headquarters in Manila, and concurrently as commanding officer of the 4th Composite Group. When his overseas tour ended in July 1923, Jones returned to Washington D.C. and the office of the Chief of Air Service in September 1923 as Assistant Chief of the Supply Group, a position he held until March 1925, when he became Chief of Property and Requirements Section. Between November and December 1925, he performed additional duty as technical advisor to the prosecution during the court martial proceedings against Brigadier General Billy Mitchell.^[4]

Air Corps

Jones' first assignment as a member of the Air Corps was as a student officer at the Army Industrial College between February and July 1926, followed by a tour as student officer at the Command and General Staff School at Fort Leavenworth, Kansas, from September 1926 to June 1927.^[24] Following his graduation, he was assigned as Air Officer, Seventh Corps Area, at Omaha, Nebraska, between July 1927 and May 16, 1928. He then attended the Army War College in Washington, D.C., graduating July 1, 1929, and was immediately assigned to the G-2 Division of the War Department General Staff that date.^[23] He organized the newly activated 8th Pursuit Group at Langley Field, Virginia, on June 25, 1932,^[25] and commanded it until February 1934.^[26]

In that month, President Franklin D. Roosevelt canceled mail contracts between the United States Post Office and commercial airlines as the result of a scandal, and gave the task of delivering air mail to the Air Corps.^[27] The project, known as the Army Air Corps Mail Operation (AACMO), divided the country into three zones, with Jones placed in charge of the Eastern Zone.^[1][26][27] He established his headquarters at Floyd Bennett Field in Brooklyn, New York, and later at Mitchel Field on Long Island. Flight operations commenced on February 19 in severe winter weather. By February 24, there were three crashes in the Eastern Zone, two of them fatal. Jones instituted a number of operational restrictions in the interest of safety, but these were often disregarded by his pilots, many of whom were inexperienced young reservists. AACMO continued into June 1934, and Jones' report of his zone's activities was published and widely read.^[28]

Following the mail operation, Jones was given command of the 2d Bombardment Wing at Langley Field in November 1934.^[26] In January and February 1935, in a run-up exercise to the service test of the General Headquarters Air Force (GHQAF), Jones directed a force of 81 aircraft, an airship, and more than 350 men in maneuvers conducted throughout the southeastern United States, organizing them into opposing "Red" and "White Force" provisional units, to demonstrate the ability of Air Corps units to operate in the field from continuously changing bases.^[29] On March 1, 1935, the 2nd Wing became a part of GHQAF, and command of it carried a temporary rank of brigadier general. Jones was not selected to fill the new billet. Dispossessed of his command assignment, Jones was attached to the General Staff's War Plans Division and placed on the faculty of the Army War College as an instructor. He was promoted to the permanent rank of lieutenant colonel, Air Corps, in August 1935, and to the temporary rank of colonel the following year on August 26.^[26]

In the fall of 1937, Jones lectured in the Army War College's course on the use of military airpower. Using attaché reports from both the Spanish Civil War and the Second Italo-Abyssinian War, Jones reiterated the long-standing position of the General Staff that airpower was of limited value when employed independently, declared that the "Flying Fortress concept had died in Spain",^{[n 4]} and that airpower was useful mainly as "long range artillery." Air Corps officers in the G-3 Department of the General Staff rejected Jones' conclusions as inconsistent with Training Regulation TR 440-15 Employment of the Air Forces of the Army (then current Air Corps doctrine), although their views were dismissed by the Deputy Chief of Staff.^[30]

In March 1938, the War Department offered Jones command of the 18th Wing in Hawaii, which also included temporary promotion to brigadier general. However Jones declined the position, stating in his submission to Cullum's Biographical Register in 1940^{[n 5]} that he did so "because of desire of superiors to retain his services within continental U.S." (sic)^[26] He remained as a senior instructor at the Army War College in his temporary rank of colonel until September 1939. He then returned to the ground forces, becoming a battalion commander in the 13th Cavalry (Mechanized) at Fort Knox, Kentucky. On November 7, 1939, Jones left the Air Corps and formally transferred back to the Cavalry branch in the rank of lieutenant colonel.^{[26][n 6]}

World War II

Jones during World War II

Soon after his return to the Cavalry, Jones attended the Cavalry School at Fort Riley, Kansas, for a 30-day student officer course. When he returned to the Fort Knox, he was elevated on January 2, 1940, to regimental Executive Officer.^[26] The 13th Mechanized Cavalry was a component of the 7th Cavalry Brigade (Mechanized), the Army's only combined-arms mechanized force in 1939, and Jones returned at a time when advocates of mechanization struggled to overcome resistance from horse-cavalry proponents, including the Chief of Cavalry, Major General John K. Herr. While at Fort Knox, Jones became "an early and persistent advocate of light aviation [for air-armor coordination]" and "the intellectual force behind...a full-scale endorsement of flivver aircraft [with] cavalry pilots" organic to mechanized cavalry units.^{[31][n 7]}

In June 1940, Jones was admitted to Walter Reed General Hospital on an extended medical leave of six months. After his release to full duty, he served at Fort Bliss, Texas, as commanding officer, Special Troops, 1st Cavalry Division, from December 9, 1940, to June 16, 1941. In the expansion of the Army leading up to American participation in World War II, he transferred to Providence, Rhode Island, to become Anti-Tank Officer of 6th Army Corps on October 4, 1941, where he was stationed when the Japanese attack on Pearl Harbor took place.

He received promotion to permanent colonel on February 1, 1942. On July 9, 1942, Jones was ordered to the Southwest Pacific Area (SWPA), when he served from August 14 to February 5, 1943, during the Guadalcanal Campaign. On March 27 he began his final career assignment at Camp Pickett, Virginia, as commanding officer, Special Troops, Second Army to August 22. Jones subsequently retired from the Army with a line-of-duty medical disability on January 31, 1944.^[32]