The Armour of Contempt: Gaunt's Ghosts: Warhammer 40,000, Book 10 (Unabridged‪)‬

Book 10 in the Gaunt's Ghosts series.

Colonel-Commissar Ibram Gaunt returns with the Tanith First to a world that he promised to save, only to find that years of war and the ever-present taint of Chaos may have damaged it beyond redemption.

Listen to it because....

It's a triumphant return to Gereon. Gaunt promised to liberate the planet from the forces of Chaos, and now he's back to keep his word. But as is ever the way for the Tanith, tragedy will be mingled with triumph as the war on Gereon grinds on...

The story:

Colonel-Commissar Ibram Gaunt spent a year fighting as part of the underground resistance on the enemy-held world of Gereon. When he left, he promised that he would bring the forces of the Imperium to liberate Gereon's citizens from their oppressors. Now he has returned, a crusade army at his back, but he finds a world devastated by war and a people irrevocably damaged by the taint of Chaos. Now Gaunt must fight to save Gereon not only from the enemy, but from the Imperium itself.