Depending on your platform, here is how you can access or install the English files: Steam (Official Method)
on PC is through the , which automatically downloads the necessary files when the language setting is changed. Official Steam Method call of duty ghost english language pack link
may offer specific regional packs (e.g., the Classic Ghost Pack), but these are usually DLC rather than full language conversions. PlayStation Store Note on Regional Versions: Depending on your platform, here is how you