It is the very first side-arm the player starts out with in the Underground, supplied by Manon's brother, Jacques. Silenced version can be used during missions Hunting the Desert Fox and Undercover in Crete. It holds a capacity of 8 rounds, 1 more than the M1911, and it has the much greater power and fire rate, making the M1911 essentially inferior.
In Multiplayer, the P-38 is the sidearm of every class in the German team's selection menu. It is a potent sidearm, carrying 1 more round than the Colt, though doing less damage than it due to the weaker 9mm cartridge.
The Walther P38 is featured once again and the last time in series as the official German sidearm. It is used by very large number of German soldiers, from harbor workers to MG operators. It is first usable in the level Riding Out the Storm where the player picks one up upon boarding Sturmgeist's train. It is good for getting the player out of a bad reloading situation, though it will perform poorly outside of close range.