Entire film was shot over two weeks. Additional shooting taking place over five extra days over a period of three months.
The Land Rover broke down one week into filming which caused serious delays in some scenes. This means many of the vehicle shots are actually three-four months later than the main shoot.
The original crash sequence involved Earl Palmer as the driver, he accidentally crashed into a piece of agricultural machinery though the footage was unsuitable for the final cut.
The end sequence was re-scripted and re-shot as the original was incomplete due to injuries on the day.
During the interrogation sequence Lt Brcko falls into a drainage hole and badly hurts his leg. He keeps going though for a full three minute take.