Press (1) to activate main gun. Press (2) to activate commander's cupola. Press (3) to activate driver's, gunner's, and commander's hatch. To steer, use VTOL for left track and Trim for right track. To aim weapons, use Pitch for elevation and Roll for traverse. To open hatches, use Throttle. The Scorpion TD program was a two-part program which aimed to increase the firepower of the Scorpion light tank. The Scorpion light tank, while light, mobile, and generally seen as successful, only had a 30mm automatic cannon. While suitable against light armor, infantry, and rudimentary fortifications, they struggled against much heavier opposition such as heavy bunkers and main battle tanks. This is the Mk 1 variant, armed with a 90mm railgun that have been in storage for some time. As soft targets were to be expected, a high-explosive projectile was provided. This 90mm railgun could knock out an Artemis frontally at 12 miles away, while it could do the same to a Tiger III at 14 miles away. However, the 90mm gun was fitted in a casemate mount, meaning it could not engage targets which were not in front of it. Limited traverse was not deemed an issue, however; the Stingray tank destroyer, which featured a similar gun, had a similarly limited traverse, had less armor, and could only fire to the rear, and was considered successful. The machine is currently in combat trials.