Scorpion:

The M808 Main Battle Tank (MBT), more widely known as the Scorpion, is the primary armored fighting vehicle of the UNSC ground forces. The Scorpion is large and heavily armored, but is surprisingly nimble. The four-track design (each track mounted on an independent, computer-controlled suspension system) allows the Scorpion to climb over or maneuver around large debris or other battlefield obstacles.

Gravity Hammer

The Type-2 Energy Weapon/Hammer (or T2 EW/H) is more commonly identified as the Gravity Hammer. This weapon consists of a haft, head, and blade. A field generator, which is located in the head, emits a kinetic pulse (~4.5 meters). The exact mechanism by which it functions is currently under investigation.