Combat actions in Europe showed that the standard 76 mm gun was not effective against modern German medium and heavy tanks of the time when firing from medium and long range. The decision was made to combine the M18 chassis with the M36 tank destroyer turret, equipped with the powerful 90 mm gun. One prototype was built that underwent trials on the Aberdeen Proving Ground. Development was discontinued due to the war's conclusion. This Premium vehicle has a 20% bonus XP earn and a 35% bonus Silver earn.