The 52-year-old was shooting for the film outside the Grand Hotel here on Sunday, reports dailymail.co.uk.
Pitt was in camouflage fatigues for his role as a top US Army General in the satire about the war in Afghanistan.
The movie is an original production for Netflix and Pitt is producing it through his Plan B Entertainment production company as well as starring in it.
Apart from Pitt, the film stars Will Poulter, Emory Cohen, Topher Grace and Anthony Michael Hall. It has also been shot on location in Berlin and London.
“War Machine” is inspired by the best-selling book “The Operators: The Wild And Terrifying Inside Story Of America’s War In Afghanistan” by late Michael Hastings.
Directed and written by David Michod, the movie has been in production since August last year. It is set to be released in theatres later this year.