Los Angeles, Nov 22 (IANS): Actress-filmmaker Angelina Jolie and her star husband Brad Pitt‘s sons Pax and Maddox have jobs on the set of "First They Killed My Father".

“Pax (11) is doing a lot of the stills,” Jolie, 40, told people.com. “The whole movie is from a child’s point of view.”

Directed and co-written by Jolie, "First They Killed My Father" is about the Khmer Rouge Regime in Cambodia. The movie is being filmed in Cambodia, where her oldest son Maddox is from.

Maddox, 14, is helping with research for the film. He also worked as a production assistant on Jolie’s most recent movie, "By the Sea", her first onscreen collaboration with husband Pitt in 10 years.

“Every time we had a fight scene or sexual scene he obviously wouldn’t be near us. So, he had to work in the parking lot,” Jolie, who wrote, directed and starred in the movie, said.

“But he read the scenes of the day - I didn’t even know! One day he came up to me and said, ‘Really interesting script, Mom'.”

Jolie and Pitt have four other children: Zahara, 10, Shiloh, 9, and twins Knox and Vivienne, 7.