World of Tanks requirements for Marks of Excellence and Mastery badges. Target damage WN8, MoE calculator.

Centurion Action XTier 10, Medium tank

The Action X turret was planned to be used for later variants of the Centurion tank. One prototype of the turret was mounted on the chassis of the Centurion Mark 7, and another was used for ballistic trials. The vehicles with the Action X turret never entered mass production or saw service.