CustomRes
From Original War Support Wiki
NOTE: THIS WAS ADDED IN 1.08 AND DOES NOT EXIST IN LOWER VERSIONS
Intro
CustomRes allows you to use Original War with resolutions higher than 1024x768. The videos and menus will still be in there default resolutions but the game will be in your selected resolution.
Usage
"owar.exe" customres <WIDTH> <HEIGHT>
Example
"owar.exe" customres 1280 960