Brad Pitt and 'Fury' co-star Shia LaBeouf were ordered to go camping by the film's director David Ayer recently, in order to develop a bond.
The 'World War Z' hunk is currently in Buckinghamshire in England to shoot his new World War II movie 'Fury', and director David Ayer ordered the all-male cast - who play a close-knit troop of soldiers - to forage in a nearby forest for two days earlier this month in a bonding exercise.
A source told UsMagazine.com: ''They play soldiers in the same World War II troop and the director wanted to make sure they bonded. So he dropped them in the wilderness -- without their cellphones!''
Clint Eastwood's son Scott, 27, rounds out the cast but wasn't part of the camping trip.
The new pals were ''ordered'' to camp for a few days to develop chemistry on and off screen and even had to resort to hunting for their own food.
The source added: ''They must have gotten pretty cosy in the tents they were sharing.''
The cast have been hard at work preparing for the blockbuster movie with Brad, Shia and Logan all spending the night at a real army base in June.
The Hollywood trio were given hands on training with tanks and machine guns at the National Training Center in Fort Irwin, California.