Editing Warhammer 40,000/10th Edition Tactics/Space Marines (section)

==Faction Rules==
*'''Oath of Moment''': The special rule of the faction, this lets you mark one enemy unit. All of your forces can re-roll to hit and wound this one unit, making it ideal for focus-firing an enemy to death. Expect Knight players to refuse to play against you.
*'''Space Marine Chapters''': A datasheet listing both {{W40Kkeyword|adeptus astartes}} and a second faction keyword means the second keyword is that datasheet's ''Chapter''.  You cannot have datasheets from more than 1 ''Chapter'' in your army.
**As Gabriel Seth shows, most Successor Chapters remain under the umbrella of their progenitor chapter with the exception of Epic Heroes being rendered unable to be fielded alongside other Epic Heroes of that progenitor chapter.