The Game offers only 4:3 Resolutions - you need to INI Edit the Resolution and HEX edit the FOV to get it HOR+
Resolution INI edit:
Go to \main\configs\unnamedsoldier.cfg
Scroll down to the "cvars" section. Add these lines:
seta r_customwidth "2560"
seta r_customheight "1400" //set these variables to whatever you want the resolution to be.
seta r_mode "-1"
FOV HEX edit:
Alied Assault: Go to \main\gamex86.dll
Cutscene FOV: Go to Offset 000A10A0 and change 00 00 A0 42 --> 00 00 B4 42 (16:10) or 00 00 BE 42 (16:9)
Game FOV: Go to Offset 00112E60 and change 00 00 A0 42 --> 00 00 B4 42 (16:10) or 00 00 BE 42 (16:9)
Spearhead: Go to \mainta\gamex86.dll
Cutscene FOV: Go to Offset 000E7830 and change 00 00 A0 42 --> 00 00 B4 42 (16:10) or 00 00 BE 42 (16:9)
Game FOV: Go to Offset 00147A50 and change 00 00 A0 42 --> 00 00 B4 42 (16:10) or 00 00 BE 42 (16:9)
Breakthrough: Go to \maintt\gamex86.dll
Cutscene FOV: Go to Offset 000EEB00 and change 00 00 A0 42 --> 00 00 B4 42 (16:10) or 00 00 BE 42 (16:9)
Game FOV: Go to Offset 00150C00 and change 00 00 A0 42 --> 00 00 B4 42 (16:10) or 00 00 BE 42 (16:9)
I created some FOV Solutions in the Attachment - MOH-Warchest-FOV.zip
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Alternative FOV via INI edit - This must be done every time you enter a new level, and it doesn't work in multiplayer.
Add this 2 Lines more in your unnamedsoldier.cfg
seta ui_console "1"
seta developer "1"
Now start the game. Whenever you load a level, you must bring down the console ("~" key), and type "fov 90." You can go higher. Advanced users may consider binding an out-of-the-way key to "fov 90". (e.g. add the following to the unnamedsoldier.cfg: bind b "fov 90")