Ensure you have the specific language pack corresponding to your version.

If you only see text changes but no audio, ensure the localized audio files (typically .pck or .s4p files) were correctly placed in the main folder.

Copy the language files (often found in folders named after the language, like english or russian ) into the root directory of your Call of Duty: WWII installation.

"The Frozen Dawn," the concluding chapter of the zombies experience. Understanding the CODEX Update