History Headscratchers / Warhammer40kImperium

** In the current lore (The Siege of Terra novel series), everyone who knows about the void shields being lowered on the Vengeful Spirit knows it's a trap (Both Valdor and Dorn immediately claim that Horus is trying to lure him in). In this version, Terra, and the Sol System in general, is slowing being sucked into the warp, essentially threatening to turn the Sol System into a giant warp rift similar to the Eye of Terror. This also causes a breakdown in space-time, preventing Guilliman's forces from arriving at Terra, as they can't physically locate the world without the Astronomican (which is inactive). Meanwhile, Horus is apparently on the verge of ascending to godhood, meaning that the Emperor needs to take down Horus now before he grows too powerful. As for the battle, it's revealed that the Emperor severely underestimated Horus. Rather than hold back against his son, the Emperor (who already considers Horus dead) is genuinely outmatched by Horus (who's being empowered by the Chaos Gods) especially since the He gave up godhood (long story). The exact battle would take too long to describe but it retcons a lot of details in the earlier description of the final battle.

** It's heavily implied in the End and the Death, that the Emperor never really trusted the Primarchs because from his perspective, he never really knew them. He does apparently care for them on some level. Examples include his treatment of Mortation in the Godblight, him rescuing Vulkan on Nocturne, and the fact that he didn't immediately write them off as a lost cause after scattered (As Valdor had suggested).

** In the current lore (The Siege of Terra novel series), everyone who knows about the void shields being lowered the Vengeful Spirit knows it's a trap (Both Valdor and Dorn immediately claim that Horus is trying to lure him in). In this version, Terra and the Sol System in general, is slowing being sucked into the warp, essentially threatening to turn the Sol System into a giant warp rift similar to the Eye of Terror. This also causes a breakdown in space-time, preventing Guilliman's forces from arriving at Terra, as they can't physically locate the world without the Astronomican (which is inactive). Meanwhile, Horus is apparently on the verge of ascending to godhood, meaning that the Emperor needs to take down Horus now. As for the battle, it's revealed that the Emperor severely underestimated Horus. Rather than hold back against his son, the Emperor (who already considers Horus dead) is genuinely outmatched by Horus (who's being empowered by the Chaos Gods) especially since the He gave up godhood (long story). The exact battle would take too long to describe but it retcon a lot of details in the earlier description of the final battle.

** In the old lore (William King's portrayal of the Siege), the Emperor was unaware that reinforcements were coming as Horus ordered the Traitor forces to jam all communications to Terra and used his own powers to block the Emperor (or anyone else) from psychically receiving any messages. As far as the Emperor was concerned, no reinforcements would get to Terra in time.

** In the current lore (The Siege of Terra novel series), everyone who knows about the void shields being lowered the Vengeful Spirit knows it's a trap (Valdor and Dorn immediately claims that Horus is trying to lure him in). In this version, Terra and the Sol System in general, is slowing being sucked into the warp, essentially threatening to turn the Sol System into a giant warp rift similar to the Eye of Terror. This also causes a breakdown in space-time, preventing Guilliman's forces from arriving at Terra, as they can't physically locate the world without the Astronomican (which is inactive). Meanwhile, Horus is apparently on the verge of ascending to godhood, meaning that the Emperor needs to take down Horus now. As for the battle, it's revealed that the Emperor severely underestimated Horus. Rather than hold back against his son, the Emperor (who already considers Horus dead) is genuinely outmatched by Horus (who's being empowered by the Chaos Gods) especially since the He gave up godhood (long story). The exact battle would take too long to describe but it retcon a lot of details in the earlier description of the final battle.

** It isn't mentioned in The Fluff so far, other than one ''Ciaphas Cain [[note]] HERO OF THE IMPERIUM!! [[/note]]'' short story but logically they must have or all the world's with seas would be home to Tyrannid creatures. Given the Imperium's wasteful attitude to manpower with the Imperial Guard, it is probably along the lines of "a landraider can serve (very) briefly as a boat".

** It isn't mentioned in The Fluff so far, other than one ''Caiphas Cain [[note]] HERO OF THE IMPERIUM!! [[/note]]'' short story but logically they must have or all the world's with seas would be home to Tyrannid creatures. Given the Imperium's wasteful attitude to manpower with the Imperial Guard, it is probably along the lines of "a landraider can serve (very) briefly as a boat".

** To put it another way, Captain is the official rank but the Space Marines have a major BloodBrothers complex. "Brother-Librarian" probably isn't a rank either, but you'll get Marines using it.
** Less BloodBrothers, more WarriorMonk. The Codex chapters are religious orders, much like the various Catholic military orders- and what do monks call each other? There are exceptions, of course- the Space Wolves are more likely to be going for Blood Brother than Monk (although they pretty much think they're gods).

[[folder:If a Space Marines Chapter becomes Chaos Space Marines what happens to the Successor Chapters if they have any?All kill? More Chaplain?Are they even told?]]

** Per Wiki/TheOtherWiki, the earliest confirmed evidence of metalworking is a copper pendant [[https://en.wikipedia.org/wiki/Metalworking#Prehistory dated to 8700 B.C.]], found in northern Iraq. Pretty close to Anatolia (modern Turkey), in fact, which old fluff claims is the Emperor's birthplace.

** Also Space Marines aren't tactically inept. They just don't bother when there's no need to be tactical. When most weapons can't even punch through their armor, why waste time running cover to cover when you can just march straight up to the enemy and stab and shoot them? Watch the fan made Astartes videos on YouTube. That shows Space Marine tactics very well. The enemy's autoguns are worthless against their armor so they just walk through it and any time they come across a real threat, they can flawlessly and quickly dodge, preempt, and out maneuver the enemy before they can do any real damage.

Do Space Wolves Commanders read The Codex Astarte at all? Even if it's just to coordinate with separate Space Marines Chapters?

[[folder:Inquisitorial logic]]