The invention relates to a combination mortar weapon (1) with a base (4) and mortar barrel (12). A frame (7) with a receiving area (8) for receiving an additional base (10) is attached to the base (4). The base (4) belongs to a standard mortar (2) and the additional base (10) belongs to a commando mortar (3). The mortar barrel (12) is secured to the additional base (10) of the commando mortar (3). The mortar barrel (12) is used by the standard mortar (2) and by the commando mortar (3). The connection between the base (4) of the standard mortar (2) and the base (10) of the commando motor (3) is produced at least by a rapid-action closure (11). The frame (7) comprises an arm (13), to which a monopod (14) is attached as the support device and for the purpose of elevating the mortar barrel (12).