You can increase the FOV by editing the game's profile configuration file. This method is generally considered safe and does not require third-party software.
Medal of Honor: Warfighter was built primarily for consoles (Xbox 360 and PS3) where the default FOV is typically locked around 60°–65°. When ported to PC, the developers did not adjust this standard. The result was a default FOV estimated to be (with some sources claiming as narrow as 65°). medal of honor warfighter fov
Regardless of the reason, the lack of native support forced the community to take matters into their own hands. You can increase the FOV by editing the