| 91st Aero Squadron | |
|---|---|
 Lt. Everett Richard Cook, Commanding Officer, 91st Aero Squadron, standing beside his Spad VIII aircraft, 1918 | |
| Active | 21 August 1917–Present |
| Country |  United States |
| Branch | .svg){kind=small} Air Service, United States Army |
| Role | Observation |
| Size | Squadron |
| Part of | American Expeditionary Forces (AEF) |
| Engagements |  World War I  Occupation of the Rhineland |
| Decorations | .jpg){kind=small} French Croix de Guerre with Palm |
| Commanders | |
| Notable commanders | Maj. John N. Reynolds Lt. Everett R. Cook[1] |
| Insignia | |
| 91st Aero Squadron emblem |  |
| Aircraft flown | |
| Fighter | Spad XIII, 1918–1919[1] |
| Reconnaissance | Avion de Reconnaissance 1 and 2 (AR 1 AR 2), 1918 Breguet 14, 1918–1919 Salmson 2A2 1918–1919 De Havilland DH-4, 1918–1919[1] |
| Trainer | Curtiss JN-4, 1917[1] |
| Service record | |
|---|---|
| Operations |
First Army Observation Group
|
| Victories |
Air Aces: 4[5]
**Pilot, shared victories with observer/gunner |
The 91st Aero Squadron was a unit of the Air Service, United States Army that fought on the Western Front during World War I. The 91st was one of the first five American flying squadrons to reach France, arriving at Chaumont Hill 402 Aerodrome on 15 November 1917.
The squadron was assigned as an Army Observation Squadron, performing long-range, strategic reconnaissance over the entire length of the United States First Army sector of the Western Front in France.[6] After the 1918 Armistice with Germany, the squadron was assigned to the United States Third Army as part of the Occupation of the Rhineland in Germany. It 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 91st Squadron.[3][7]
The current United States Air Force unit which holds its lineage and history is the 91st Cyberspace Operations Squadron, assigned to the 67th Cyberspace Wing, Kelly Field Annex, Lackland Air Force Base, Texas.[8]
- ^ a b c d Cite error: The named reference
AFHRAwas invoked but never defined (see the help page). - ^ 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.
- ^ a b Series "E", Volume 10, History of the 91st Aero Squadron. Gorrell's History of the American Expeditionary Forces Air Service, 1917–1919, National Archives, Washington, D.C.
- ^ a b c 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 26 May 1919
- ^ Cite error: The named reference
MTwas invoked but never defined (see the help page). - ^ "Maurer, Maurer (1978), The US Air Service in World War I, The Office of Air Force History, Headquarters USAF Washington" (PDF). Archived from the original (PDF) on 27 September 2013. Retrieved 28 August 2013.
- ^ (1988 Reprint), 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
- ^ Rogers, Brian. United States Air Force Unit Designations Since 1978. Hinkley, England: Midland Publications, 2005. ISBN 1-85780-197-0.