99th Aero Squadron

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99th Aero Squadron
Pilots of the 99th Aero Squadron pose with a Salmson 2A2 at Parois Airdrome, France, November 1919
Active 21 August 1917-2 June 1919
Country  United States
Branch US Army Air Roundel.svg  Air Service, United States Army
Type Squadron
Role Corps Observation
Part of American Expeditionary Forces (AEF)
Engagements World War I War Service Streamer without inscription.png
World War I
Maj. Arthur R. Christie
Capt. James E. Meredith
Capt. Lyle S. Powell[1]
99th Aero Squadron Emblem 125px
Aircraft flown
Fighter Sopwith 1½ Strutter, 1918[1]
Reconnaissance Salmson 2A2, 1918-1919[1]
Service record

V Corps Observation Group
Western Front, France: 12 June-11 November 1918[2]

  • Sorties: 417
  • Combat missions: 279
  • Killed: 3
  • Wounded: 5
  • Missing: 1
  • Aircraft lost: 5 [3]
  • Enemy Aircraft shot down: 3[4]
  • Enemy Balloons shot down: 0[4]
  • Total Enemy Aircraft Destroyed: 3[4]

The 99th Aero Squadron was a Air Service, United States Army unit that fought on the Western Front during World War I.

The squadron was assigned as a Corps Observation Squadron, performing short-range, tactical reconnaissance over the V Corps, United States First Army sector of the Western Front in France, providing battlefield intelligence.[5] After the 1918 Armistice with Germany, the squadron returned to the United States in June 1919 and became part of the permanent United States Army Air Service in 1921, being re-designated as the 99 Squadron (Observation).[3][6]

The current United States Air Force unit which holds its lineage and history is the 99th Reconnaissance Squadron, assigned to the 9th Operations Group, Beale Air Force Base, California.[1]



The 99th Aero Squadron was organized on 21 August 1917 at Kelly Field, Texas. On 13 October 1917 the squadron was ordered to the Aviation Concentration Center, Mineola, Long Island, New York for overseas duty.[3]

The squadron proceeded by train from San Antonio to New York City, and arrived without incident. The 99th embarked for duty in France at Hoboken, New Jersey on the White Star liner RMS Cedric on 14 November. The liner crossed the Atlantic via Halifax, Nova Scotia without incident, and arrived in Liverpool, England, on 30 November. From Liverpool, the squadron took a train south to Winchester, where it remained until 7 December at a rest camp. On 8 December, the squadron crossed the English Channel, arriving in Le Havre, France. After two days awaiting transportation, the squadron boarded a troop train and arrived at American Expeditionary Forces 2d Aviation Instruction Center at Tours Aerodrome, France.[3]

The 99th was the first complete American Aero Squadron to arrive at the 2d AIC. Men were assigned to special duty in various training departments. The instruction concentrated on becoming familiar to the British and French aircraft and various engines with which they were expedited to have experience with at the front.[3]

The squadron, now composed of three officers and 136 enlisted man left Tours on 9 March and arrived on 11 March at Haussimont Aerodrome, in the "Zone of Advance", or the Western Front. The squadron was designated as a Corps Observation squadron, and assigned to the Headquarters, Chief of Air Service, AEF. Hangars were erected at the field in preparation for reception of airplanes and pilots. On 23 March, 18 pilots were assigned to the squadron and an equal number of aircraft, British Sopwith 1½ Strutter, commonly called "Pups". At Haussimont, the squadron organization grew to include an armament, engineering, radio, photographic, and other departments. With the arrival of observers, the squadron was ready to enter combat as a completely equipped American Observation Squadron.[3]

Combat in France

The initial operations of the squadron began on 1 April with missions being flown in conjunction with the 3d Artillery Observation School at Mailly, France as part of the First Army Observation Group. This work continued daily until 31 May, when orders were received to move to Amanty Aerodrome. On 20 June, the first casualty of a flying officer occurred, while testing an aircraft at the French airdrome at Apiz, a 99th pilot was killed in a crash.[3]

The first flight across the lines into enemy territory occurred on 22 June 1918 when Lieutenants Alexander, Kahle, and Nutt, along with three observers flew over the enemy lines on a reconnaissance mission over the Toul-Moselle Sector. All of the aircraft returned with holes in the wings, attesting to the accuracy of enemy anti-aircraft artillery.[3]

File:99th Aero Squadron - 5.jpg
Officers of the 3d flight, 99th Aero Squadron with offierc of the Escadrille Sal #1 (French) at Dogneville Airdrome, France, August 1918.

Missions in the Toul Sector were of brief duration and on 1 July, the squadron was ordered to Luxeuil-les-Bains Aerodrome and transferred to the V Corps Observation Group. Being the first American Aero Squadron to arrive at Luxeuil, the squadron was given an unusually cordial reception. There, the squadron received the latest in French observation planes, the Salmson 2A2, as the Sopwiths were found to be unsatisfactory for reconnaissance over enemy territory.[3]

Missions began immediately with the V Corps Infantry Aviation School at Luxeuil. A detachment of flying officers were dispatched to Corcieux Airdrome, Vosges, France for flights over the lines with the French 285th Spad Squadron. The mission of the squadron at Corcieux was to cooperate with the French Air Force and enable the pilots and observers to learn the St. Die Sector. In order to learn the sector, the American Observers flew with French pilots, and French Observers flew with American pilots. In these flights, frequent combat was encountered with German aircraft.[3]

On 24 July the 285th Squadron was ordered to move and the 99th’s 3d Flight, consisting of seven Salmsons, seven pilots, seven observers and their maintenance crews moved from Luxouil-les-Bains, to the French Dogneville Airdrome. There, the flight was assigned to the 33rd French Corps, was ordered to carry on the work over the sector formerly covered by the 285th Squadron. The 99th flew reconnaissance missions and directed artillery fire in support of U.S. Army, 5th Division’s offensive against German soldiers entrenched at Frapelle.[3][7]

File:99th Aero Squadron - 7.jpg
Members of the 99th Aero Squadron and French 1st Escadrille with a French Salmson 2A2, Dogneville Aerodrome, France, August, 1918.

From Dogneville, the 3rd Flight flew photographic missions more than 40 kilometers behind enemy lines. No other unit, in this sector, had ever photographed deeper than ten kilometers before. When the 5th Division began its attack on 17 August 1918, the 3rd kept two aircraft airborne throughout the day. One observed enemy positions and directed artillery fire. The other maintained contact with Allied infantry and advised headquarters of the line-of-advance. Since the ground troops never displayed panels to show their position, pilots often had to fly low enough to distinguish between friendly and enemy uniforms. This exposed the aircraft and crew to heavy machine-gun and rifle fire. Contact crews often aided the ground offensive by attacking machine-gun sites and firing at enemy troops. After the successful offensive, 3d Flight crews photographed the new front lines[7]

Observers developed an effective means of communicating their information to the ground commanders. They first radioed the data to their ground station. Pilots then flew over the unit command post and observers dropped a written message confirming the radio call. They next flew over corps headquarters and dropped another note verifying their radio communication. Despite what seemed to be an efficient method, aviators and artillery troops often had difficulty communicating and seldom made an effective team.[7]

The 99th also aided the 5th Corps during the St. Mihiel offensive from 12 through 16 September. The squadron had moved to Souilly Aerodrome on 7 September. German soldiers were well entrenched and prepared for a prolonged defense of their positions. Before the attack, crews flew photographic reconnaissance missions taking oblique shots of enemy positions. As the ground offensive began on 12 September, a heavy mist, low-hanging clouds and intermittent rain severely hampered aerial observation. Nevertheless, 99th pilots flew visual observation and artillery adjustment missions throughout the day.[7]

File:99th Aero Squadron - 3.jpg
Capt James E. Meredith, commander next to his Salmson 2A2 at Luxeuil-les-Bains Aerodrome, France, July 1918

Severe weather also affected aerial operations on 13 September, but skies cleared the following day. So the 99th flew infantry contact, artillery adjustment, photographic and visual reconnaissance missions. Flying eight kilometers deep behind enemy lines, crews produced photographs that clearly defined enemy positions. Some of Germany’s best aviators operated in this area, but Allied crews successfully defended themselves and completed their mission. On 15 September, foul weather returned and limited flights to visual operations and artillery adjustments.[7]

On 20 September the 99th Aero Squadron moved to Foucaucourt Aerodrome and prepared to help the 5th Corps in the Meuse-Argonne offensive. Again, the German soldiers opposed the attack from barbed-wire-protected trenches. Also, additional enemy pursuit, observation and bombardment forces meant most of the Kaiser’s best aviation units defended the area.

When the ground attack began on 26 September, inclement weather restricted flight operations. Rain, haze and fog usually obscured the ground from then until 11 November. Since cloud cover severely limited photographic reconnaissance, headquarters confined missions to a few, well-defined and extremely important areas. Aircraft and pilots often stood ready to fly, waiting in vain for any break in the clouds. When weather permitted, crews took oblique photographs along enemy lines. If the need for information was great, pilots flew even in heavy cloud cover hoping for a chance break to take that important picture.[7]

Pursuit planes protected observation aircraft during these missions. The large number of enemy pursuit aircraft operating in the area made an attack during photographic flights almost a certainty. The pursuit protectors often flew about 500 meters above the observation aircraft. This gave them an advantage against enemy attackers. Photographic aircraft also flew during large bombing and pursuit operations to take advantage of the amassed firepower. The four black crosses on the 9th Reconnaissance Wing’s emblem today represent 1st and 99th Squadrons’ participation at St. Mihiel, Argonne-Meuse, Champagne-Marne and Aisne-Marne.[7]


With the Armistice with Germany reached on 11 November 1918, combat operations ended. After nearly three months of service on the front, the 99th Aero Squadron lost 3 members Killed in Action, and another 5 members killed from wounds or other causes. Six other members were wounded. One aircraft, a Salmson, did not return from a mission on 29 September, its pilot and observer were not accounted for and were carried as Missing In Action. Both members were later determined to be KIA and their bodies were recovered.[3][7]

With the end of combat, the 99th was transferred to Air Service Headquarters, AEF, at Chaumont-sur-Aire Airdrome. With the sudden end of the war, the process of returning the AEF to the United States took several months. Squadron pilots began flying courier and liaison flights within the American sector, while flights of the squadron were dispatched to several airfields to support the French Air Force in reconstruction and other necessary tasks.

On 19 February 1919 orders were received for the squadron to report to the 1st Air Depot, Colombey-les-Belles Airdrome to turn in all of its supplies and equipment and was relieved from duty with the AEF. The squadron's Salmson aircraft were delivered to the Air Service American Air Service Acceptance Park No. 1 at Orly Aerodrome to be returned to the French. There practically all of the pilots and observers were detached from the Squadron.[8]

Personnel at Colombey were subsequently assigned to the Commanding General, Services of Supply and ordered to report to a staging camp at Sadirac. There, personnel awaited scheduling to report to one of the Base Ports in France for transport to the United States and subsequent demobilization.[8] In early May, the 99th was moved to the Base Port at Bordeaux, and the squadron arrived in New York about the 23d and began the process of demobilization at Hazelhurst Field on Long Island. By the middle of June, the 99th Aero Squadron was fully demobilized, its men returned to civilian life.[1]


  • Organized as 99th Aero Squadron on 21 August 1917
Re-designated as 99th Aero Squadron (Corps Observation) on 11 March 1918
Re-designated as 99th Aero Squadron on 24 May 1919
Demobilized on 9 June 1919
Re-constituted and organized as 99th Corps Observation Squadron on 2 July 1919
Re-designated: 99th Squadron (Observation) on 14 March 1921[1]



Combat sectors and campaigns

Streamer Sector/Campaign Dates Notes
Toul Sector 22 June-1 July 1918 [9]
St. Die Sector 19 July-26 August 1918 [9]
Streamer ST. MIHIEL 1918 ARMY.png St. Mihiel Offensive Campaign 12–16 September 1918 [9]
Streamer MEUSE-ARGONNE 1918 ARMY.png Meuse-Argonne Offensive Campaign 26 September-11 November 1918 [9]

Notable personnel

DSC: Distinguished Service Cross; SSC: Silver Star Citation; KIA: Killed in Action[11]

See also


 This article incorporates public domain material from websites or documents of the Air Force Historical Research Agency.

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 AFHRA 99 Reconnaissance Squadron (ACC) Lineage and history
  2. Series "H", Section "O", Volume 29, Weekly Statistical Reports of Air Service Activities, October 1918-May 1919. Gorrell's History of the American Expeditionary Forces Air Service, 1917–1919, National Archives, Washington, D.C.
  3. 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 Series "E", Volume 15, History of the 97th-102d Aero Squadrons. Gorrell's History of the American Expeditionary Forces Air Service, 1917–1919, National Archives, Washington, D.C.
  4. 4.0 4.1 4.2 Gorrell's History of the American Expeditionary Forces Air Service, Series M, Volume 38, Compilation of Confirmed Victories and Losses of the AEF Air Service as of May 26, 1919
  5. Maurer, Maurer (1978), The US Air Service in World War I, The Office of Air Force History, Headquarters USAF Washington
  6. Order of Battle of the United States Land Forces in the First World War, Volume 3, Part 3, Center of Military History, United States Army, 1949 (1988 Reprint)
  7. 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 History of the 99th Reconnaissance Squadron. Prepared by Coy F. Cross II, 9th Reconnaissance Wing History Office]
  8. 8.0 8.1 Series "D", Weekly Statistical Reports of Air Service Activities, October 1918-May 1919. Gorrell's History of the American Expeditionary Forces Air Service, 1917–1919, National Archives, Washington, D.C.
  9. 9.0 9.1 9.2 9.3 United States War Department (1920), Battle Participation of Organizations of the American Expeditionary Forces in France, Belgium and Italy, 1917–1919, Washington, Government Printing Office, 1920
  10. Obituary of Jefferson Hayes Davis, Princeton Alumni Weekly, 13 May 1975
  11. Military Times Hall of Valor Search, 99th Aero Squadron

External links