| Name | Character | Episodes |
|---|---|---|
| Keith David | Sgt. Major Donald Cody | 13 |
| Michelle Buteau | Private Robinson | 13 |
| Geoff Stults | Sgt. Pete Hill | 13 |
| Parker Young | Pvt. Randy Hill | 13 |
| Tania Gunadi | Private Park | 13 |
| Angelique Cabral | Sgt. Jill Perez | 13 |
| Christopher Lowell | Cpl. Derrick Hill | 13 |
| Kyle Davis | Private Dobkiss | 13 |
| Mort Burke | Private Gumble | 13 |
| Mel Rodriguez | Specialist Chubowski | 8 |
| Teala Dunn | Britnay Cody | 3 |
| Brandon Routh | Brandon Stone | 2 |
| Stacy Keach | Patrick | 1 |
| Clint Culp | Mr. Shifflet | 1 |
| Lori Loughlin | Self | 1 |
| Mircea Monroe | Jeanie | 1 |
| Andy Daly | Rodney Spratz | 1 |
| Dean Stockwell | Dan | 1 |
| Obba Babatundé | General Murray | 1 |
| Geoff Pierson | Sgt. Major Diggins | 1 |
| Barry Bostwick | Russell | 1 |
| Ryan Seacrest | Self | 1 |
| Tom Virtue | Officer | 1 |
| Chasty Ballesteros | Theresa | 1 |
| Eddie Shin | Ted | 1 |
| Tucker Albrizzi | Kenny Shifflet | 1 |
| Olivia Rose Keegan | Megan | 1 |
| Christopher Reid | Self | 1 |
| Ezra Buzzington | Private Swaggle | 1 |
| Federico Dordei | Main Italian Soldier | 1 |
| Ron Funches | Private Huggins | 1 |
| Jon Donahue | Officer Gilko | 1 |
| Jill Johnson | Nancy | 1 |
| Peter Koch | The Swede | 1 |
| Grace Rowe | Female Officer | 1 |
| Christopher Martin | Self | 1 |
| Drew Justice | Tim Spratz | 1 |
| Charlotte Newhouse | Bartender | 1 |
| Duncan Joiner | Little Brother | 1 |
| Hayley Derryberry | Inga | 1 |
| Angel Oquendo | Angry MP | 1 |
| Ervin Ross | Passing Civilian | 1 |