The Dreadnought battle tank had weapons that included laser cannons, concussion missiles, and a plasma pulse discharger. The missiles were launched from mass-driver cannons similar to the ones carried by republic gunships.
It had heavy armor plating, and was one of the biggest hovertanks, surpassed only by the Protodeka and the Seismic tank.
The Dreadnought battle tank was used by Prax during the battle of Thule, where he was able to destroy Jedi General Windu's fighter tank. The tank along with Prax was then destroyed by Jedi Commander Skywalker as he went to destroy the Dark Reaper.