In Call of Duty 2, mortars are used directly by the German Military. Mortars are seen in many levels, such as "The Pipeline" and "The Crossroads". In some missions a hint may appear saying that the player should look for smoke, because that's where the mortars are firing from. Also, two soldiers make up the German mortar teams.
The mortar is a usable emplacement on top of a tower in the mission "Back on the Grid", with the ability to destroy huts and technicals with one shell. This is the first time in the Modern Warfare series and Call of Duty series made by Infinity Ward where the player can actually use the mortar.
Mortars are used by the MPLA in the level Pyrrhic Victory, in which the player is tasked to clear the mortar teams. The M29 Mortar Shell is also a usable weapon that can be found in several places in the campaign accessible only with the Access Kit. It acts just like it did in Call of Duty: World at War, being primed by hand then thrown rather than fired through a mortar.
In Call of Duty 2, if the player shoots a mortar-carrying soldier, the mortar will disappear.
The Call of Duty 2 German mortar model reappears on the unused explosive training range in Call of Duty 4, in the Modern Warfare 2 mission "Team Player" and in the mission "Pyrrhic Victory" in Black Ops II.