United States Air Force Rank Insignia

Enlisted

NO INSIGNIA - Airman Basic (AB) (E-1)

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Airman (Amn) (E-2)

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Airman First Class (A1C) (E-3)

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Senior Airman (SrA) (E-4)

Non-Commissioned Officer (E-5 - E-6)

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Staff Sergeant (SSgt) (E-5)

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Technical Sergeant (TSgt) (E-6)

Senior Non-Commissioned Officer (E-7 - E-9)

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Master Sergeant (MSgt) (E-7)

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Senior Master Sergeant (SMSgt) (E-8)

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Chief Master Sergeant (CMSgt) (E-9)

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Chief Master Sergeant of the Air Force (CMSAF) (E-9)

Commissioned Officer

Company Grade Officer (O-1 - O-3)

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Second Lieutenant (2Lt) (O-1)

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First Lieutenant (1Lt) (O-2)

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Captain (Capt) (O-3)

Field Grade Officer (O-4 - O-6)

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Major (Maj) (O-4)

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Lieutenant Colonel (Lt Col) (O-5)

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Colonel (Col) (O-6)

Flag Officer (O-7 - O-10)

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Brigadier General (Brig Gen) (O-7)

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Major General (Maj Gen) (O-8)

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Lieutenant General (Lt Gen) (O-9)

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General (Gen) (O-10)

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General of the Air Force (GenAF) (O-10)
(Only used in wartime - most likely a world war)