Here is the most useful, concise guide to obtaining and applying the (often labeled that way on torrent or repack sites).
Backup the zone folder and any sound or localization files. Call Of Duty Advanced Warfare Language Pack English BEST
Increase to 90 for better peripheral vision in the exoskeleton era. Here is the most useful, concise guide to
Steam will then download the necessary English localization files (approximately 900MB to 1GB). Here is the most useful
If the "Language" tab is missing or doesn't list English (common in certain international retail copies), you may need to manually add the language files.