The game does not natively support widescreen resolutions. You can fix this by editing the unnamedsoldier.cfg file or using community patches like the MoHAA Revival project.
The original physical release of Medal of Honor: Allied Assault required a found on the back of the manual or the jewel case. This key was used to verify the installation and was required for accessing official online multiplayer servers. medal+of+honor+allied+assault+cd+serial+number+link
If you are looking for a CD serial number or link, you are likely trying to reinstall this classic World War II shooter on modern hardware. Released in 2002, Allied Assault remains a landmark in gaming history, particularly for its cinematic "D-Day" mission. The game does not natively support widescreen resolutions
Searching for "serial number links" often leads to "abandonware" or "crack" websites. While these may seem like a quick fix for a lost key, they carry significant risks: This key was used to verify the installation
Understanding Medal of Honor: Allied Assault Serial Keys and Installation