A story about a fictional South African police base on the border between Angola and the former South West Africa. While patrolling, a mail convoy is ambushed and most of the soldiers are shot. The captain is rescued, but one of his constables is taken prisoner. The constable’s sister is also the captain’s girlfriend. GRENSBASIS 13 (Border Post 13) tells the story of the captain’s suspenseful and action-filled rescue attempt in order to bring his sweetheart’s brother home.
| Production | Elmo De Witt | Producer |
| Production | Philo Pieterse | Executive Producer |
| Editing | Gerrie van Wyk | Editor |
| Directing | Elmo De Witt | Director |
| Writing | C.F. Beyers-Boshoff | Writer |
| Crew | Jean Delbeke | Cinematography |
| Costume & Make-Up | Edwin Hazelton | Makeup Artist |
| Directing | Johan van de Vyver | Assistant Director |
| Sound | Anthony Keyser | Sound |
| Crew | Johan van de Vyver | Mixing Engineer |
| Crew | Franz Joubert | Special Effects |
| Crew | Jerry Raven | Special Effects |
| Crew | Dawie van Heerden | Special Effects |
| Camera | Johan Scheepers | Assistant Camera |
| Directing | Karen Pepler | Continuity |
| Production | Bernie Masters | Production Assistant |
| Production | Jannie Wienand | Production Assistant |
