In Call of Duty 3, the player can use the German weapons in two missions to destroy enemy defenses. The missions are "The Forest" and "Laison River." In the missions, "The Corridor of Death" and "Chambois", the player must take out three mortar teams to complete the objective. Several unmanned Grantwerfer 34s also appear in the level "The Island". The weapon has fairly high splash damage, throwing enemies all over the place, but the player has to wait a few seconds for the barrel to cool and use again.