Jolie's sons Pax, Maddox assisting in filming

It appears that Angelina Jolie is training her kids about camera details from a small age only as the actress revealed that her 11-year-old son Pax did lot of stills on the sets of her upcoming directorial 'First They Killed My Father'.

The 'Unbroken' helmer added that her oldest son Maddox, who has already worked as a production assistant in his parent's recent movie 'By The Sea', is again assisting the star by doing all the research work and helping with the script, People Magazine reported.

The 40-year-old actress mentioned that though her sons are aiding her in filming the movie, she makes sure they stay out of the set while a fight or sexual scene gets filmed.

The movie, which is written and directed by the Oscar-winning actress, is adapted from Cambodian author and human rights activist Loung Ung's 2000 memoir First They Killed My Father: A Daughter Of Cambodia Remembers.

'First They Killed My Father' is presently getting filmed in Cambodia, where notably Jolie's oldest son Maddox is from.