Defenders of Ultramar — Graham McNeill

Discover one of the fiercest fighting Chapters in the Universe: The Ultramarines 4th Company! Sergeant Learchus must take twenty-five newly recruited Battle Brotherson their first engagement, as they embark on an investigation of the lost patrol ship Guilliman's Honour. What was a routine mission becomes much more when 4th Company encounters one of the Imperim's deadliest enemies!