Aeronautical Division The Army detailed Lahm to the fledgling
Aeronautical Division, a section in the Office of the Chief Signal Officer (OCSO), on September 17, 1907, while he was still in Europe. His departure from France was delayed after a relapse of the
typhoid he contracted in the spring of 1907 and he took convalescent leave at a rest home in
St. Germain. It was in the home's garden on August 1, 1907, the very day that the Aeronautical Division came into being, that Lahm's father introduced him to
Wilbur and
Orville Wright. The elder Lahm had personally investigated the claims of the brothers and had been quietly promoting them among his colleagues in France since 1905. The meeting was the beginning of a friendship that lasted until the two brothers died. En route to the United States, Lt. Lahm toured aviation sites in Germany and England, where he met
Griffith Brewer, a balloonist who later became a pilot for the Wrights. In December, Lahm arrived at
Fort Myer, Virginia, where he and a detachment of
Signal Corps troops constructed a
hydrogen generating plant and practiced captive observation balloon work.
Alexander Graham Bell, inventor of the telephone and an early aviation enthusiast, often invited Lahm to join visiting scientists in his Washington home for discussions on many subjects, especially aviation. The Signal Corps advertised specifications for a powered airplane on December 23, 1907, and among the three bids found acceptable was one submitted by the Wrights to build a plane within 200 days for $25,000. The Signal Corps budget had insufficient funds to meet the three bids, and in early February 1908, Lahm accompanied Gen. Allen and chief of the Aeronautical Division Capt
Charles DeF. Chandler to meet with President
Theodore Roosevelt to obtain funds from a contingency account. On April 30, Lahm reported to New York City along with 1st Lt.
Thomas Selfridge and
Albert L. Stevens to familiarize 25 members of the 1st Company, Signal Corps,
New York National Guard organizing a National Guard balloon unit (the "aeronautical corps") in the use of hydrogen-filled
kite balloons. Upon his return from New York, Lahm became head of the Aeronautical Division when Capt. Chandler was transferred to command the
Signal Corps Balloon Station at
Fort Omaha, Nebraska, on May 13. In August Lahm earned his second FAI certificate,
Dirigible No. 2, The aircraft was destroyed, and Lt. Selfridge killed, in a crash on September 17. The Wright brothers brought an improved version of their 1908 plane to Fort Myer in 1909 for further War Department trials. After practice hops Orville Wright, with Lieutenant Lahm as a passenger, made the first official test flight on July 27. He and Lahm established a world's record for a two-man flight: one hour, 12 minutes and 40 seconds, to meet the Army's specification for the aircraft, designated
Signal Corps (S.C.) Number 1, being the first airplane purchased by the U.S. Army. The Wright Brothers set out to fulfill their Army contracts by teaching officers to operate the machine, with Lahm and 2nd Lt.
Frederic E. Humphreys selected by Gen. Allen as candidates. In October 1909 Wilbur Wright trained both at a field in
College Park, Maryland recommended by Lahm after balloon observations and inspections on horseback. Lahm made the first flight at the new field on October 8. Both officers soloed, with Humphreys going first. After only 14 flights, Lahm was pronounced a pilot on October 26. He Received FAI Airplane certificate No. 2, and took up his first passenger, the U.S. Navy's observer Lt.
George C. Sweet, on November 3. Lahm and Humphreys crashed November 5, but both were uninjured, and the airplane was repaired. However the Signal Corps lost the service of both when they were returned to their regular assignments by their respective branches. In December 1909 Lahm joined the
7th Cavalry at
Fort Riley, Kansas. In June 1910 Lahm attended Mounted Service School and graduated in June 1911. In October he married
high school history teacher Gertrude Jenner in Mansfield, then rejoined the 7th Cavalry in the Philippines. At the request of the Signal Corps he opened a seasonal flying school on the polo ground of
Fort William McKinley near Manila on March 12, 1912.
S.C. No. 7, a
Wright Model B aircraft shipped to the Philippines, was assembled and made its first flight on March 21. Lahm trained 1st Lt. Moss L. Love and Corporal
Vernon Burge, the first enlisted pilot in the Army, in April and May 1912. On May 8, 1912, Lahm crash-landed
S.C. No. 7 in mud on the
Taguig River after his engine failed, and again on May 29, putting the aircraft out of operation for a total of 13 days. After an engine change, the aircraft was much more reliable, but the rainy season shut down the school and he returned to troop duty. On March 10, 1913, he began a second season of instruction, training three more officers. On June 17, 1913, before flying was shut down again because the airfield was too muddy, Lahm conducted a 21-mile reconnaissance from Ft. McKinley to
Alabang, drawing accurate sketches of positions of the 7th and
8th Cavalry on maneuvers there. On July 19, 1913, he passed a Signal Corps-required flying test administered by the
Aero Club of America (even though he had received an ACA aviator license in 1911) and received ACA ''Expert Aviator's Certificate No. 15'', which also qualified him to be
rated as a Military Aviator. After
S.C. No 7 became a total loss in August, Lahm's small detachment received a new aircraft,
S.C. No. 13, a Wright C Speed Scout equipped with pontoons for water landings. On September 11, 1913, Lahm attempted a water takeoff for a flight test but the
center of gravity on the aircraft made it tail-heavy and it flipped over. Although the aircraft was totally destroyed, Lahm was saved from drowning by a
life jacket. In November, at his own request, he was relieved of flying duties and returned to troop duties.
Aviation Section In October 1914 Lahm was assigned to the 6th Cavalry at Texas City and
Harlingen, Texas until April 1916. Having completed the required years of troop duty in his branch, he was detailed to the
Aviation Section, U.S. Signal Corps, which had replaced the Aeronautical Division as the Army's aviation arm in August 1914. Lahm's rating was changed to that of Junior Military Aviator and he was placed on flying duty again. This resulted in his immediate promotion to captain in accordance with another provision of the law. He reported for duty on April 1, 1916, at the
Rockwell Field,
San Diego, California as Secretary (
adjutant) of the Signal Corps Aviation School and President of the Junior Military Aviator Examining Board. On May 29, 1916, Captain Lahm was briefly detached to the 3rd Field Artillery Regiment at
Fort Sam Houston, Texas, to practice using captive balloon ascensions for artillery spotting. Shortly after, on June 12, his permanent rank of captain, Cavalry, was approved. In January 1917 Lahm was involved in a controversy that estranged him from
Henry H. Arnold, future Chief of the Army Air Forces. Arnold was supply officer for the Aviation School, having returned to the Aviation Section from the Infantry the previous May. On January 6, Arnold was present in Lahm's office when the Officer In Charge of Training, Capt.
Herbert A. Dargue, came in to protest an authorization for a flight. A student at the school's Field Officers course, Lt. Col.
Harry G. Bishop of the Field Artillery, had asked for a plane and pilot to fly to an unspecified location, and Dargue protested that the flight interfered with scheduled training. According to Arnold's statement to investigators, Lahm told Dargue to "carry out his instructions" without further explanation. On January 10 the flight took place, despite a second protest from Dargue to the school commandant, Col.
William A. Glassford, and became lost with its crew somewhere in Mexico. When Glassford called in Lahm, he denied authorizing the flight, and Glassford made a public announcement to that effect based on Lahm's denial. The plane, which apparently had been headed to
Calexico, had drifted off course and come down in the
Sonoran Desert, with Bishop and his pilot finally located and rescued nine days later. Dargue had shown Arnold the original authorization signed by Lahm, however, which Arnold verified to investigators on January 27. On January 30, one day after the birth of his son, Arnold was transferred to Panama, which he attributed to retribution by Lahm and Glassford. After the United States entered
World War I, Lahm became commanding officer of the Army Balloon School at Fort Omaha on May 24, 1917. At that time he was the Army's only airplane, balloon, and dirigible pilot. On June 27, Lahm received promotion to major in the Aviation Section, Signal Corps. He suffered a severely broken leg early in June when his
polo pony "Joe" slipped on a paved street in Omaha and fell on him. As he was about to start sick leave, Lahm was offered a six-week inspection tour of balloon schools, equipment, and operations in both Britain and France. ==Air Service, AEF==