various
Ultramarines: Quick Reads Collection

The Ultramarines are the epitome of a Space Marine Chapter. By following absolutely the dictates of their primarch’s great Codex Astartes, they can defeat any foe.
Warhammer 40k
collection

It contains:
Chains of Command
Codex
The Enemy of My Enemy
Fate's Masters, Destiny's Servants
Cato Sicarius: Master of the Watch
Eye of Vengeance
Leviathan
Consequences