Book 17 of "The Horus Heresy: Primarchs". Fantastic character focussed
novel featuring the Primarch of the Blood Angels legion.
Sanguinius is the Great Angel, most beloved of all the primarchs, his
mighty exploits celebrated throughout the entire Imperium as the Crusade
expands into the void. And yet the origins of his Legion are shrouded in
mystery and rumour, his unique physical form is an enigma, and his
perilous home world remains off-limits to all but his own secretive
people. When a discredited remembrancer arrives with the expeditionary
fleets to chronicle the primarch's deeds, he has to work hard to uncover
the truth behind the legends. As he accompanies the Ninth Legion to war
against the enemies of the Emperor, he eventually learns much more than
he expected to, not just about the subjects of his study, but also the
nature of the Imperium itself.