Replacing Heth after his death, he discovered that most of his armies were bogged down in other campaigns and those troops that were available often had no transport available due to the scheming of Lord High Admiral Lansung. Ultimately, Verreault submitted to Lansung to a degree in order to allow his Guard the ability to transport themselves.
Unlike his predecessor Heth who was more military-minded and best suited for the battlefield, Verreault was a political animal. During the war, he supported the disastrous Proletarian Crusade and was in the pocket of Lord Commander Udin Macht Udo. Nonetheless, when Koorland and the Inquisition removed Udo from power, Verreault quickly supported them.
When Maximus Thane organized a new offensive on Ullanor following the death of Koorland, Drakan Vangorich was able to force both Verreault and his new ally Lord High Admiral Lansung into contributing resources for the operation. This was achieved by staging an incident where his bodyguards began killing one another, as several were revealed to be Callidus Assassins. Faced with death or cooperation, Verreault and Lansung relented to Vangorich's demands.
Later after the war, Verreault reluctantly accepted Maximus Thane as the new Lord Commander of the Imperium and even Vangorich as his second, the Lord Protector. In secret however he plotted with Lansung and Master of the Administratum Tobris Ekharth to have Vangorich killed. However the trio were too late and preempted by Vangorich, and in The Beheading Verreault was shot by Ekharth, who had been replaced with an impostor. After Lansung was also killed by Ekarth, it was made to appear that the duo had killed each other. Verreault was replaced by Oskar Lowis as Vangorich's new puppet Lord Commander militant.
- 1: Predator, Prey (Novel) Chapter 6
- 2: The Emperor Expects (Novel) Chapter 2
- 3: The Last Wall (Novel) Chapter 5
- 4: Throneworld (Novel) Chapter 16
- 5: Echoes of the Long War (Novel) Chapter 18
- 6: Shadow of Ullanor (Novel) Chapter 6
- 7: The Beheading (Novel) Chapter 9