| Role | Voice Part | Classification |
|---|---|---|
| Colleen | Mezzo Soprano | L |
| Philip Houston, USMC Lance Corporal | Bass-Baritone | L |
| Shatha | Soprano | F |
| Kassim | Baritone | F |
| Lalo, USMC Senior Lance Corporal | Baritone | F |
| Rocks, USMC Private | Bass | F |
| Taylor, USMC Lance Corporal | Tenor | S |
| Corpsman, HP 3 | Tenor | S |
| Wissam | Tenor | S |
| Minimum Chorus: No chorus |
Schedule C