Some require kills with specific Battlefield 1 weapons that you must unlock and buy with War Bonds, others have you play the campaign a certain way, such as stealth runs or finding every Field Medal. The Weapons Codex Entries The Vehicles Codex Entries The Tactics Codex Entries The War Codex Entries For more tips on Battlefield 1, check out our main Battlefield 1 Guide, tips and tricks hub; our Battlefield 1 maps breakdown, our complete list of Battlefield 1 weapons stats, unlocks and War Bonds advice, and Codex Entries; how to get the tiny gun Kolibri; how to get Battlepacks, Scrap and Puzzle pieces; and class guides for the Battlefield 1 Elite Classes, Medic class, Support class, Scout class, and specialist Pilot, Tanker and Cavalry classes, too. The World Codex Entries
