"The French army joins the fight to defend their homeland. Close-quarter fights and huge tank battles on the Western Front await."
Battlefield 1: They Shall Not Pass is the first expansion pack for Battlefield 1. It was first revealed alongside Battlefield Premium on August 24th 2016. The expansion features the French Army as a new playable faction. It was released for Premium members on March 14th, 2017 and had its worldwide release on March 28, 2017.
The cover image, showing a French soldier holding a Chauchat sideways with both of his hands, appears to be inspired by the On ne passe pas! propaganda poster created by Maurice Neumont. The same poster also inspires a similar shot in the official trailer.
Alongside Battlefield 4: Dragon's Teeth, the expansion was released for free to all players between May 2 to May 14, 2018 as part of the Road To Battlefield promotion.