Operation Burning Tide

Operation Burning Tide was an Imperial campaign carried out by the Ardent Shields Space Marine Chapter upon an unnamed Imperial world that had fallen into strife and open insurrection. It was during this campaign that the Ardent Shields began to develop an open disdain for those more Puritan Inquisitors that callously disregarded innocent lives and utilised the most extreme measure at their disposal - Exterminatus. During this campaign they openly moved against a Inquisitor that had enacted Exterminatus upon a hive city while they still had battle-brothers still fighting within. In retribution, the Chapter Master led a contingent of 1st Company veteran marines and stormed the Inquisitor's vessel, taking the Inquisitor in custody and turning him over to the Lord Inquisitors of the sector, to be judged.

History
During this particular campaign the Ardent Shields Chapter slowly began to develop their disdain, and in some cases hatred, of the Inquisition's willingness to subject entire planets to the dire fate of Exterminatus, especially in cases when the fighting would be too costly and time-consuming. At one time, the Chapter even came to blows with an Inquisition that had begun to rain Imperial fire down upon an Imperial hive city that was currently undergoing a heretical rebellion that contained many loyalist Astra Militarum forces and a few of the Chapter's battle-brothers still located there. The Chapter Master of the Ardent Shields responded by ramming his Strike Cruiser into the Inquisitor's vessel, branding the man a traitor to the Imperium. The Chapter Master personally led the First Company in a boarding action of the Inquisitor's ship and took the man prisoner, sending him to be judged by the High Inquisitors for his actions against the Chapter.