You can try Battlefield 1’s DLC free this week, and Prise de Tahure will be free for good

EA have detailed what to expect from the next few weeks of Battlefield 1 content, including new maps, a chance for base players to check out the DLC, and a certain premium map going free for everyone.

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From January 16 to January 22, all Battlefield 1 players will be able to take part in the Gallipoli Trial, making the Gallipoli content from the Turning Tides expansion temporarily free. This is the same sort of Premium Trial DICE have previously run, and it will also allow access to content from the In the Name of the Tsar and They Shall Not Pass expansions.

from
https://www.pcgamesn.com/battlefield-1/battlefield-1-turning-tides-gallipoli-trial-free-dlc