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.
- Frontlines gamemode
- 2 New Operations: The Devil's Anvil, "Beyond the Marne"
- Trench Raider Elite Class
- 10 New ranks
- New Medals
- New Dog Tags
- New Codex Entries
- 12 Assignments
- Verdun Heights
- Fort De Vaux
- Nivelle Nights (Post-Release)
- Prise de Tahure (Post-Release)
- They Shall Not Pass is the first Battlefield expansion with post release content introduced to it in the form of maps exclusive to owners of the expansion.
- The DLC is named after "They shall not pass" (French: Ils ne passeront pas!), a slogan famously used by French General Robert Nivelle during the Battle of Verdun, and was used on French propaganda posters.
- 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.