The 50-year-old Oscar winner braved pouring rain to attend the event at The Tank Museum in Bovington in Dorset.
Pitt wore dark sunglasses as he entered the site to promote Second World War film Fury, in which he plays a battle-hardened army sergeant.
He removed his shades and posed for pictures beside Logan Lerman, Jon Bernthal and David Ayer, writer, director and producer for the film.
The photocall came days after Pitt wed Angelina Jolie at the Chateau Miraval in France, in the presence of the couple’s six children.
Pitt was photographed wearing a gold ring on his wedding finger during the museum event.
Fury, set in 1945, also stars Shia LaBeouf and Michael Pena as an American crew embarking on a deadly mission behind enemy lines.
Pitt plays army sergeant Wardaddy, who commands a Sherman tank and a five-man crew on the assignment.
Wardaddy and his men are outnumbered and outgunned and face overwhelming odds in their heroic attempts to strike Nazi Germany when a rookie soldier is thrust into their platoon.
The film will be released nationwide on October 24.