skos:altLabel | - 1st
- 1st Squadron
- 1st Observation Squadron
- 1st Aero Squadron
- 1st Bomb Squadron
- 1st Bombardment Squadron
- 1st Bombardment Squadron, Medium
- 1st Photographic Reconnaissance Squadron
- 1st Provisional Aero Squadron
- 1st Provisional Bombardment Squadron
- 1st Reconnaissance
- 1st Squadron (Observation)
- 1st Strategic Reconnaissance Squadron
- First Aero Squadron
- United States 1st Aero Squadron
- first air unit
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