Adeptus Arbites - Notable Arbites Actions: Pavonis (Unknown Date.M41) - During the workers' riots on Pavonis, the entire Adeptus Arbites force stationed at the planetary governor's palace was destroyed (save one who had been tasked by Inquisitor Ario Barzano with the personal protection of the governor), but only after holding out for several solar hours and fighting a rearguard action in the secret palace tunnels. They succeeded in destroying Pavonis' largest weaponry and munitions cache, denying its supplies to the traitorous Planetary Defence Force legions.Ichar IV (ca.992.M41) - During the beginning of Hive Fleet Kraken's approach, rioting began to consume planets near the southeastern fringe of the Imperium. Inquisitor Agmar investigated these strange riots for signs of treasonous thoughts or heretical influence. On Ichar IV, a religious fundamentalist group called the Brotherhood was the cause of the rioting. Although they preached a faith like that of the Imperial Cult, they refused to obey Imperial commands or pay their tithe. Soon after this act of defiance they started instigating riots among the masses. While trying to break up one such riot, the Arbitrators of the planet were quickly surrounded by what seemed to be mobs organized from the complete population of the planet. When the local Planetary Defence Force regiment was called to help, it was quickly made apparent that they, too, had sided with the rebel mobs. After the assassination of the planetary governor, the Brotherhood established itself as the sole controlling force on Ichar IV. Inquisitor Agmar arrived on Ichar a few weeks after the outbreak of rebellion and on the same day that the Arbites precinct fortress in the capital, Lomas, was finally overrun. The Arbitrators were not defeated and most of their number escaped along a secret tunnel and captured the city's four main power generators. Inquisitor Agmar led assaults on the capital, but he was unable to rescue the Arbitrators who were overrun just six days after his arrival. With their final act, they destroyed the city's power generators. Because of the destruction of the city's power grid, the Ultramarines (who arrived just 39 days later) were able to retake the planet. It was later revealed that the Brotherhood was controlled by Genestealers.Typhos Prime (Unknown Date.M41) - As a Tyranid hive fleet approached the Typhon Sector, the Inquisitor Oriel of the Ordo Xenos released a Genestealer into the Astra Militarum fortress city of Coritanorum on the sector's capital world of Typhos Prime in an attempt to find ways of defeating the approaching Great Devourer. The predictable result was a rebellion against Imperial authority by the resulting Genestealer Cult established within the Typhos Supreme Guard, the world's Planetary Defence Force, and the outbreak of civil war. To deal with the rebellion, the local Typhos Adeptus Arbites greatly increased their patrols and locked down many of the surrounding cities. The world's leadership called in the forces of the Astra Militarum's Mordian Iron Guard to put down the rebellion while the local Commissariat took command of the Arbitrators for the two standard years that the civil war raged. Ultimately, the rebellion was put down after Oriel called in the Astra Militarum's 13th Penal Legion who successfully disabled the reactor coolant systems of Coritanorum, leading to the fortress' destruction. It was then that the evidence of Oriel's complicity in the original rebellion was discovered. As a result, Oriel was not allowed to evacuate with the 13th Penal Legion and was killed in the explosion of Coritanorum.