Over a decade after the failure of the Dark Trooper Project, a spy working for the Zann Consortium, under orders from the criminal empire's leader, infiltrated the Imperial Remnant and managed to gather several details on the project, which was designed for construction of advanced Imperial battle droids. The most important information gathered was several technical characteristics of the Assault cannon, which was capable of punching through heavy armor in a single blast. Assault cannons were the primary weapon of the Dark troopers, and were demonstrated as highly effective against foot soldiers, vehicles, and even entire buildings in engagements such as the Battle of Talay.