* There are several references to Literature/GauntsGhosts:
** At least one footnote in one of the books makes a reference to a certain individual who held the dual rank of Colonel-Commissar for a number of years.
** In ''The Traitor's Hand'' (possibly a TakeThatMe):
--->"'Come on, men! Do you want to live forever!'[[note]]Gaunt's CatchPhrase, for those not in the know[[/note]] The noncom in charge of the squad must have been on something, I thought. Nobody spoke like that outside of badly-written combat novels."
*** Possibly a MultipleReferencePun -- the phrase itself dates back as far as Frederick the Great, was likely popularized by ''Literature/StarshipTroopers'', and has been quoted in ''many'' combat novels since, including badly-written ones.
** ''Duty Calls'' has a limousine with a cabinet made of naalwood, native to Tanith. Cain remarks this probably cost more than the dropship that brought him down to the planet. No wonder - keep in mind, the Cain books are set in the 900.M41/00.M42 era, while the ''GauntsGhosts'' books are set in the 700.M41 era and feature the Tanith ''First And Only'' for [[ApocalypseHow a very good reason]].
** ''For The Emperor'' has a footnote listing notable mixed-gender regiments.
** ''Cain's Last Stand'' features a retired Guard veteran who repeatedly lets out a war cry of "Give them the straight silver!" echoing the Ghosts' order to fix bayonets with their distinctive "straight silver" warknives.
** This makes it a double reference, as the character is clearly Corporal Jones of ''Series/DadsArmy'', who often said "They don't like the cold steel up 'em, sir!"
** ''For The Emperor'' also makes a reference to "the Sabbatine Incident" regarding a clash between two different classes of ship, one of which was created to replace the other. These two classes actually fight in ''Sabbat Martyr''. (Though the chronology is of debatable correctness.)
* Sandy Mitchell seems to have a particular knack for combining this trope with StealthPun:
** In ''Death or Glory'', the guide Kolfax is a sandsider, a dude who knows the desert. He might, therefore, be called [[http://en.wikipedia.org/wiki/Sandy_Koufax Sandy Kolfax]].
** In ''Duty Calls'', a priory of Adepta Sororitas plays an important role in the plot. They are headquartered on the Gavaronne plateau, making them [[Literature/TheGunsofNavarone the Nuns of Gavaronne]].
*** As a bonus, their Prioress is called [[Literature/TheCanterburyTales Sister Eglantine]].
** Also in ''Duty Calls'', there is a certain [[Literature/TheBible Pontius, pilot]] by trade.
** ''Duty Calls'' yet again: Amberley's car is a [[Film/BackToTheFuture flying DeLorean.]]
* Cain himself is only directly referred outside of his own series twice:
** The Shira Calpurnia novel ''Blind'' has the protagonist fighting off psyker illusions of glorious, almost cinematic battle. She dismisses such visions as foolish, stating that only a "boy drooling over a Commissar Cain propaganda poster" would believe such things really happen. By context, her opinion of Cain's media campaign, if not his exploits, is not high.
** The commissar in the novel ''Dead Men Walking'' refers to Cain's official report concerning the events that occurred in ''The Caves of Ice''.
* Jurgen the sidekick is perhaps the most obvious; he is drawn from Creator/GeorgeMacDonaldFraser's ''other'' famous character (besides Literature/{{Flashman}}), Private Literature/McAuslan of the Gordon Highlanders AKA The Dirtiest Soldier in the British Army and the Highland Division's answer to Peking Man. To give him credit, however, Jurgen only borrows [=McAuslan=]'s gruesome appearance and scent; he appears to be much smarter (and, without a Scottish accent, is also more understandable).
** Another borrowing from Fraser's writings may be a brief mention of Dark Eldar "reavers," a variation of a word from the title of Fraser's ''History of the Anglo-Scottish Border Reivers.''
** The name "Feric Jurgen" sounds remarkably similar to that of the protagonist of ''Literature/TheIronDream''.
** Jurgen's other basis is {{Blackadder}}'s dogsbody Baldrick, who would frequently offer an absurd solution to the current problem with his {{catchphrase}} "I have a cunning plan..." In ''For The Emperor'', Jurgen surprises Cain by saying "I have a plan". Cain replies "A particularly devious one, no doubt."
* Imperial ration packs of "[[Film/SoylentGreen Soylens Viridians]]".
* For breakfast, Cain enjoys delicious Florn Cakes.
** As well as hot grox buns.
* The villain [[Film/JamesBond Ernst Stavros Killian]].
* Amberley's savant, [[ChittyChittyBangBang Caractacus Mott]].
* "We have to call in the Navy [[Film/{{Aliens}} to sterilize the whole site from orbit. It's the only way to be sure]].". Referenced by General Zyvan '''multiple''' times during the events of ''Greater Good''.
** See also [[Film/{{Aliens}} "...pointed out that there was a significant credit value attached to this installation..."]] from ''Caves of Ice''
* "[[Film/{{Braveheart}} You may take our planet, but you'll never take our freedom!]]" Said by a man in blue face paint, no less.
* From an extract, ''[[KellysHeroes Cain's Heroes]]'', the holodrama based on Cain's actions in ''Death or Glory''. Could be a double reference to Series/HogansHeroes as well.
* Captain (later Fleet Admiral) [[HoratioHornblower Horatio Bugler]], mentioned in Vail's footnotes.
* "The Imperium Never Sleeps", the catchphrase of popular holodrama character [[ComicBook/JudgeDredd Arbitrator Foreboding]], who, in the words of Inquisitor Vail, "hunts aliens, mutants, and heretics with relish and a [[HandCannon very big gun]]".
** Extra points for this one, since it was said by a senior member of the Adeptus Arbites, which are [[{{Expy}} expies]] of Judge Dredd to begin with.
* [[Series/DoctorWho "Big red thing!]] [[FiveRoundsRapid Five rounds rapid!"]] This is used twice in ''The Traitor's Hand'' and at least once in ''Cain's Last Stand''.
* ''DeathOrGlory'': [[Franchise/StarWars "Wahoo, I got one!" "Great, don't get cocky!"]]
* [[TheManFromUncle "Open Channel D."]] There's also references on two occasions to Inquisitor Kuryakin.
* "[[Film/ApocalypseNow I love the smell of promethium in the morning]]", as a Guardsman is quoted saying in one of Sulla's memoir extracts in ''For The Emperor''. Possibly a duel reference to [[VideoGame/StarCraftI another game set into the future]].
* ''Caves of Ice'': "[[{{Terminator}} They can't be reasoned with, they can't be intimidated, and if they have the numbers on their side they simply can't be stopped.]]"
* From ''Caves of Ice'' again: ''[[{{Dune}} Fear is the mind killer]]''. (Part of the Catechisms of Command.)
* ''Caves of Ice'', yet again: ''[[Film/{{Predator}} "If it bleeds, we can kill it"]]''.
* Heavy usage of the word "[[Series/BattlestarGalacticaClassic frak]]" comes to mind, too.
* Grasshopper, a game played in the Britannicus cluster with arcane rules, month-long matches, and frequent rain delays. [[CricketRules Sound familiar?]]
* An extended one: in ''Duty Calls'', the plateau of Aceralbaterra on the planet Periremunda. Aceralbaterra is "High Gothic" for "Maple White Land," the name given the plateau in Sir Arthur Conan Doyle's ''The Lost World''. Periremunda translates as "Lost World," and the planet, after being discovered by Acer Alba, was rediscovered by Magos Provocare (which could be translated as Professor Challenger). Just to rub it in, the principal settlement on Aceralbaterra is Konnandoil, and "the locals imported thousands of sauropods from Harihowzen." The author was clearly having a ''lot'' of fun with this one.
* One of the chapter quotes from ''The Traitor's Hand'': "If you don't expect gratitude you'll seldom be disappointed." - ''[[TheEeyore Eyor]] [[Franchise/WinnieThePooh Dedonki]], Memoirs of a Pessimist. 479.M41''
** In ''Cain's Last Stand'', there is a ship called "Trespassers William".
** Barely hinted at in ''Death or Glory'', but slightly more obvious in "Sector 13," is the female law enforcer with whom Cain uncovered the genestealer cult on Keffia: Wynetha Phu. This is rather subtle, as she's petite but curvaceous -- not at all like a yellow plush bear.
* It's been mentioned in ''Death or Glory'' that "The Tracks of the Land Raider Crush the Heretics"[[labelnote:ref]]AKA "The Wheels on the Bus Go Round and Round"[[/labelnote]] is a ''very'' popular preschool song.
* In ''Duty Calls'', Cain mentions in passing a Space Marine armorer/mechanic named Tobamorie. The '''children's''' series [[http://en.wikipedia.org/wiki/Wombles ''The Wombles'']] includes a mechanic-type named Tobermory. Add to this that the chapter uses Corvus-pattern armour, which features a helmet with a distinctly beaky appearance, called womble-marines by many.
* In ''Duty Calls'' Jurgen reads from the ''Book of Armaments''. This is the same game system that has a Holy Orb of Antioch grenade for one of the factions.
* Cain's fencing instructor at the Schola Progenium was a certain [[MiyamotoMusashi Miyamoto]] [[CyranoDeBergerac de Bergerac]].
* According to her savant in ''For the Emperor'', Amberley once... investigated the 'heretics of Ghore.' This is probably a reference to John Norman's ''Literature/{{Gor}}'' novels, which had titles of that format.
* One of the stormtroopers in ''Caves of Ice'' is named Hastur. Unlike his namesake EldritchAbomination, the soldier of that name is a quick victim of [[spoiler:the Necrons]].
** He only ''speaks'' three times. And the moment he's spoken the third time, he's [[spoiler:disemboweled and skinned by a Flayed One.]]
* Auspex (radar) operator Orrily in ''Death or Glory'' might be a corruption of [[Series/{{Mash}} O'Reilly]]. Supported by mention that he wore "small round eyeglasses." Served under Lt. Piers (close to Pierce) alongside vox operator [[http://en.wikipedia.org/wiki/Guglielmo_Marconi Marquony]].
** The badass vet Ariott, who [[ClosestThingWeGot got to be]] the team's [[TheMedic medic]] in ''Death or Glory'', is a clear send-up to the no less badass RealLife vet and writer James Alf Wight, better known under his pen name of JamesHerriot. It's even noted that Arriott wrote a book titled ''[[Series/AllCreaturesGreatAndSmall All Lifeforms Large and Small]]''.
* In a wave to the '''origin''' of the ''{{Flashman}}'' stories (a book titled ''Literature/TomBrownsSchooldays''), in ''The Traitor's Hand'' an old schoolfellow of Cain's is named Tomas Beije.
* From ''Cain's Last Stand:'' ''The Fungoid Menace: Orkish Physiology and its Implications'' by [[Creator/HPLovecraft Migo Yuggoth.]] Bonus points for the Migo being themselves fungus.
* Amberley's rendezvous with Orelius is at void station [[Series/StarTrekDeepSpaceNine Delta Sigma Novem]]. Remember that November was originally the ninth month.
* In ''The Beguiling'' there is the [[http://en.wikipedia.org/wiki/St_Trinian%27s_School Saint Trynia Academy for the Daughters of Gentlefolk]]. All things considered, what happens is pretty accurate if said school was transported several thousand years into the future. The title may refer to the Clint Eastwood movie ''The Beguiled'', which also involved a soldier and a girls' school.
* Another Film/BackToTheFuture ShoutOut is in ''Death or Glory'', wherein a shot-up radio pack's most (and implied to be the only) damaged part is a 'Flux Capacitator'. It also gets a mention in "The Emperor's Finest"
** Flux Capacitators are mentioned in Duty Calls in regards to some servo-skulls.
** In the same scene Amberley's flying D'Lorien is introduced, there's also a number of things implying her cover is essentially [[Series/{{Thunderbirds}} Lady Penelope]] (including a mention of her 'home planet' being Creightonward.)
* There's an extended ShoutOut to ''Series/DadsArmy'' in ''Cain's Last Stand'', with the officer in charge going by the name of Manrin after Captain Mainwaring (who keeps the 'stupid boy' catchphrase), Corporal Jaq as an excitable ex-trooper, after Corporal Jones, and Franka for Private Pike, who still uses 'but my mum says' as an excuse for everything (although Franka is female).
* And another "book title" one -- ''Duty Calls'' features excerpts from a book on the Tyranid wars of the time called ''The Abominable Chitin.'' Seems odd, right? Well, until you remember that, besides ''PeterPan'', J M Barrie wrote a (very funny) play called "The Admirable Crichton."
** This may also be a reference to [[http://en.wikipedia.org/wiki/Admirable_Crichton the man himself]] rather than the Barrie play.
* In ''Caves Of Ice'' the tech priest Logash rebuffs Cain's attempt to gain entry into a restricted area with [[FatherTed "That would be an ecumenical matter."]]
* From ''For The Emperor'': 'The Emperor points and we obey / Through the Warp and far away' is a reference to the traditional song "Over the Hills and Far Away," which was the theme song for ''{{Sharpe}}''.
* Enginseer Felicia Tayber complaining that [[Franchise/StarTrek "I can't change the laws of theology"]] in ''Death or Glory.''
* One of the sources of supplemental excerpts in ''Cain's Last Stand'' is historian Ayjaepi Clothier, an obvious reference to controversial real-life historian A.J.P. Taylor. It '''might''' be purely coincidence that the title of Clothier's work is ''[[Comicbook/GreenLantern In Blackest Night]]''.
* The statement "I can always get another techpriest...but there's only one psychic enhancer" in ''Duty Calls'' clearly refers to ''The Maltese Falcon''. And then in ''Cain's Last Stand'' [[spoiler:Magos Felicia Tayber]] uses much the same phrasing about the possibility of blowing up the dam '''again''' to keep the Shadowlight.
* The name of the Chaos Warmaster Varan the Undefeatable sounds a bit like [[Franchise/{{Godzilla}} Varan the Unbelievable]]
* After finding [[spoiler:a Necron tomb]] deep underground in ''Caves of Ice'': "[[Film/LordOfTheRings There are worse things than greenskins]]."
* A [[MachineWorship tech-priest]] in ''Caves of Ice'' says that tagging along with Cain is "better than recalibrating the [[MST3K interociters]]."
* Another from ''Duty Calls'': The Adeptus Sororitas are drilling with a precision that [[RLeeErmey Sergeant Lermie]], the 597th's Drill Instructor, would nod grudging approval of.
* ''[[WarAndPeace Waaargh! and Peace]]'' in ''Death or Glory''.
* In "Traitor's Gambit", Cain accuses the terrorist Hanar of being just a common thief, to which she retorts that she's [[Film/DieHard an exceptional thief]].
** As a matter of fact, [[WholePlotReference the entire plot of the story]] is pretty much "''Film/DieHard'' on a luxury liner," right down to the idea of the antagonist using a terrorist attack to cover up a theft.
* The title of ''The Caves of Ice'' [[LiteraryAllusionTitle references]] Creator/SamuelTaylorColeridge's "Kubla Khan", either directly or (more probably) by way of [[http://en.wikipedia.org/wiki/Tom_Swift_in_the_Caves_of_Ice Tom Swift in the Caves of Ice]].
* In ''The Emperor's Finest,'' Cain paraphrases Rick's parting speech to Ilsa in ''{{Casablanca}}'': 'If I got on that shuttle with you now, you'd regret it. Maybe not today, or tomorrow, but soon, and for the rest of your life.''
* Part of the device to create long distance images in ''The Emperor's Finest'' is called an 'interociter', the name of the device for interplanetary communication in ''ThisIslandEarth''.
* "Kaeti," the name painted on a field ambulance in ''Death or Glory'', is also the main character of two books' worth of fantasy short stories by Keith Roberts.
** And also the name of the ambulance in ''IceColdInAlex''.
* In ''For The Emperor'', Cain loses his CommissarCap and has this monologue. Try to read it without thinking about IndianaJones.
---> '''Ciaphas''':"'The what?' I shook my head, dazedly. My hair was full of dust too, and I couldn't find my cap. For some reason that seemed very important, and I kept looking round for it, even though it was almost certainly buried under piles of debris."
* The verse from "The Guardsman's Duty" used as a chapter quote in ''For The Emperor'' (''"Whatever happens, we have got / The Emperor's Blessing. They have not"'') is taken from Creator/HilaireBelloc's ''The Modern Traveller'', with "Emperor's Blessing" substituted for "Maxim gun".
* The children's book that Vail quotes in ''Caves of Ice'', ''Our Friend Promethium'', owes its title to the 1957 Creator/{{Disney}} educational film "Our Friend the Atom", but it reads almost exactly like Creator/JohnMFord's own parody of the concept, the short film "Dilithium And You", in the [[Franchise/StarTrekExpandedUniverse Classic Trek novel]] ''Literature/HowMuchForJustThePlanet''.
* Cain alludes to an incident where he almost drowned at a place called "Rikenbach" in ''The Emperor's Finest'', a reference to Reichenbach Falls, where Literature/SherlockHolmes had his final encounter with Professor Moriarty and died ([[BackFromTheDead for a while, anyway).]]
* Cain mentions clearing out a genestealer-infested Space Hulk called the Spawn of Damnation with a squad of Space Marines. ''TabletopGame/SpaceHulk'' is the game where you do just that (sans cowardly commissar), onboard the Sin of Damnation. Lampshaded by Cain wondering who the warp ''names'' these things.
** A rather subtle and [[FridgeBrilliance clever]] one is the way the encounter plays out like a game of ''Space Hulk'' itself, with Terminators peeling off to cover corridors and genestealers massing just out of range before rushing en-masse to overwhelm them by weight of numbers. One of the Terminators even goes down when his weapon jams in the face of a rush of genestealers, a frequent occurence in the tabletop game which usually dooms the unfortunate Terminator to death.
* The main [=PDF=] airbase in ''Cain's Last Stand'' is named Rytepat, which sounds suspiciously similar to Wright-Pat, the common nickname for Wright-Patterson Air Force Base, the home of the US Air Force's Logistics Command.
* On a more serious note, the trial scene in ''For the Emperor'' somewhat parallels that in the 1957 film ''PathsOfGlory'', in which an officer seeks to save his men from being made scapegoats for a perceived breakdown in discipline.
* Bit of a stretch, but the Arbites justicar sent to chaffeur Cain in ''Duty Calls'' is [[BillNyeTheScienceGuy Bill(em) Ny(t)e]].
** Alternatively, his name could be read as a reference to [[Series/KnightRider Wilton Knight]].
* In ''The Traitor's Hand'' one of the footnotes refers to an Abandoned Biological Testing Station, which was part of an attempt to start an agricultural operation in an excessively arid part of the planet. A similar operation was mentioned in the 'Dune' novels by Frank Herbert.
* Magos Izembard, the techpriest who figures out what's going on in ''The Last Ditch'', is likely named after celebrated Victorian engineer [[http://en.wikipedia.org/wiki/Isambard_Kingdom_Brunel Isambard Kingdom Brunel]].
* The tunneler creatures of ''The Last Ditch'' are a lot like the sandworms of ''{{Dune}}''... but also to the graboids of ''{{Tremors}}'', and Cain manages to defeat one [[FeedItABomb in a similar fashion]].
* A footnote in ''The Traitor's Hand'' mentions the Nauga, "A species of animal indigenous to the hotside of Adumbria. Its [[http://en.wikipedia.org/wiki/Naugahyde toughened hide]] is highly prized for certain hard-wearing applications, particularly the covering of sofas in waiting rooms."
* There's a brief mention in ''The Last Ditch'' of something important happening in "the Halcyon Drift," which also happens to be the title and setting of the first of Brian Stableford's "Hooded Swan" novels.
* Also in ''The Last Ditch'' , Cain tells a sapper that [[Film/TheItalianJob1969 he was only supposed to blow the frakking doors off]].
* ''Dead in the Water'': The ship Ciaphas and Jurgen use for their mission is the [[http://en.wikipedia.org/wiki/Motor_Torpedo_Boat_PT-109 PB-109]], and the captain is [[ForrestGump Lt. Dan]].
* In ''Traitor's Gambit'', when the planetary governor offers a visiting Cain an alternative to his world's disappointing amasec: "[[http://en.wikipedia.org/wiki/Hava_nagila Have a nagila]]?"
* There's a point in ''The Caves of Ice'' where a techpriest traumatized by the death of his fellows at the hands of Necron Pariahs states: "[[Film/ApocalypseNow The horror! The horror!]]"
* Does [[http://wh40k.lexicanum.com/wiki/File:Traitorshand.jpg this cover]] seem familiar? [[http://static.fjcdn.com/pictures/Drive_a3c5ab_819515.jpg At all?]]
* ''The Greater Good'' features a secret Adeptus Mechanicus facility designed to study tyranids named [[{{Area51}} Regio Quinquaginta Unus]].
* Amberly mentions in an early footnote in ''The Greater Good'' that many Imperial's view of the Kroot and other client races in the Tau Empire as vassals or slaves is incorrect, and that other races are ostensibly equal members in the Empire to the Tau. However, she notes that in practice "[[Literature/AnimalFarm the Tau are more equal than others]]."
* From ''The Greater Good'' one of the books that Inqusitor Vail admits to using while editing the Archives is [[Literature/TheHitchhikersGuideToTheGalaxy Sekara's Travologue]] "Interesting places and tedious people" which has a single line entry "[[Literature/MostlyHarmless Dreary Beyond Belief]]" in reference to one of the planets Cain visits.
** Due to the short entry she's forced to fall back on ''"[[Literature/TheZombieSurvivalGuide The Tithe Worker’s Survival Guide]]"''
* In ''The Greater Good'', the tau ambassador El'hassai has two bodyguards named [[Theatre/{{Hamlet}} Ra'sncr'ns and Gl'den'sn]]. Bonus points for El'hassai soon asking of them [[Theatre/RosencrantzAndGuildensternAreDead "Are they dead?"]] shortly after he mentions their names.
* ''The Emperor's Finest'' has references to a novel written by the techpriest named ''Soylens Viridians for the Machine Spirit'', a clear reference to both ''SoylentGreen'' and the popular book series ''Chicken Soup for the Soul''.
* A trooper from the Valhallan 597th is called [[Franchise/FridayThe13th Vorhees]]. Incidentally, his girlfriend Drere gets fitted with augmetic lungs after she's mauled by an ambull, causing her breath to rasp mechanically.
* In "Sector 13" Cain and the others end up holing up in [[Film/AssaultOnPrecinct131976 a besieged Arbites station house.]]
* From ''The Greater Good'', Magos Kildahr's name seems a likely reference to DoctorKildare.
* Sgt. Benten from ''Cain's Last Stand'' is a likely reference to Sgt. Benton, a recurring character during the time of the [[Series/DoctorWho Third Doctor]].
* ''Hidden Depths'' is an Amberley Vail story, but close enough for this page. Early in the story, Vail leads her team in an attack on a group of artifact smugglers. One of them comments [[Series/MontyPythonsFlyingCircus "We wasn't expecting the Holy Inquisition."]]
* An [[MaryPoppins Admiral Boume]] is mentioned in ''The Greater Good''.
* In The Greater Good, the extract from the board of enquiry in the board interviewing [[Literature/SwallowsAndAmazons Captin Nansi Blakit of the Amazon, with her uncle, Admiral Jym Flynt,]] asking the questions.