| cast |
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| Series Regulars | |||
| |||
| Philip Winchester | Philip Winchester as Sgt. Michael Stonebridge | Sullivan Stapleton | Sullivan Stapleton as Sgt. Damien Scott |
| Amanda Mealing | Amanda Mealing as Col. Eleanor Grant | Rhashan Stone | Rhashan Stone as Maj. Oliver Sinclair |
| Richard Armitage | Richard Armitage as John Porter | Eva Birthistle | Eva Birthistle as Capt. Kate Marshall |
| Jimi Mistry | Jimi Mistry as Maj. Ashkani | | |
| |||
| Recurring & Guests | |||
| |||
| Andrew Lincoln | Andrew Lincoln as Hugh Collinson | Shelley Conn | Shelley Conn as Danni Prendiville |
| Michelle Lukes | Michelle Lukes as Sgt. Julia Richmond | | |