Sentinels of Terra - A Codex: Space Marines Supplement (6th Edition)
Sentinels of Terra - A Codex: Space Marines Supplement is a Codex Supplement to Codex: Space Marines for the 6th Edition of Warhammer 40,000. It was released in October 2013. It describes the 3rd Company of Imperial Fists Chapter, named Sentinels of Terra and their brave deeds through Imperium history.
The Imperial Fists have defended the Imperium since the days of the Great Crusade. They stood with the Emperor at the Siege of Terra, and have continued his life's work in the centuries since. They are indefatigable defenders of Mankind, and the foremost guardians of Terra itself.