Abstract: A training device for a combat vehicle with a heavy weapon, especially an armored howitzer. A shorter practice barrel replaces the weapon's regular barrel, but has the same sort of attachments at its inner end as the regular barrel has for fastening it to accommodations in the vehicle. A magazine at the outer end of the practice barrel accommodates rammed practice shells, which are decelerated and forwarded to magazine shafts offside the axis of the barrel. Practice shells of essentially the same weight and dimensions as regular shells and an impact absorber at the front for accepting the impact of a brake, are accommodated in the magazine. An accessory device for removing the practice shells from the magazine comprises a framework that travels on rollers and is provided with a platform for operating personnel and with a hydraulic lift that accepts used practice shells from the magazine and lowers them to the ground.