skos:altLabel | - 4th
- 4th Reconnaissance Squadron
- 394th Bomb Squadron
- 394th Bombardment Squadron
- 394th Bombardment Squadron, Heavy
- 4th Aero (later, 4th Squadron; 4th Observation; 4th Reconnaissance; 394th Bombardment Squadron)
- 4th Aero Squadron
- 4th Observation Squadron
- 4th United States Aero Squadron
- Fourth Aero Squadrons
- 394th Bombardment (later, 394th Combat Training) Squadron
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