U.S. Air Force
U.S. Air Force Enlisted Ranks E-1 to E-9
| Grade | Title | Abbreviation | Insignia |
|---|---|---|---|
| E-1 | Airman Basic | AB | No insignia |
| E-2 | Airman | Amn | One stripe |
| E-3 | Airman First Class | A1C | Two stripes |
| E-4 | Senior Airman | SrA | Three stripes |
| E-5 | Staff Sergeant | SSgt | Four stripes, star |
| E-6 | Technical Sergeant | TSgt | Five stripes, star |
| E-7 | Master Sergeant | MSgt | Six stripes, star |
| E-8 | Senior Master Sergeant | SMSgt | Seven stripes, star |
| E-9 | Chief Master Sergeant | CMSgt | Eight stripes, star, wreath |
E-1AB
Airman Basic
No insignia
E-2Amn
Airman
One stripe
E-3A1C
Airman First Class
Two stripes
E-4SrA
Senior Airman
Three stripes
E-5SSgt
Staff Sergeant
Four stripes, star
E-6TSgt
Technical Sergeant
Five stripes, star
E-7MSgt
Master Sergeant
Six stripes, star
E-8SMSgt
Senior Master Sergeant
Seven stripes, star
E-9CMSgt
Chief Master Sergeant
Eight stripes, star, wreath