When the Allied forces captured a modified Tiger I, adapted to serve in a technical and logistical support role for front-line armoured troops, they named it 'Bergetiger', similarly to how they had designated recovery vehicles based on the Panther and Panzer IV tanks. It was essentially a Tiger I, identical in hull and tracks, and above all in its heavy armour, stripped of its main gun and equipped with a crane suitable for towing other tanks and lifting heavy loads. It was also fitted with spare parts, equipment for repairing other armoured vehicles, and reserve ammunition. There are no official production statistics, but it is believed that several 'Bergetiger' units were built directly at the front by Wehrmacht field workshops.