* CriticalResearchFailure: The author [[ShownTheirWork went to great lengths to correctly represent]] some German WWII equipment such as the Karabiner 98k rifle or the Zündapp [=KS750=] motorcycle and sidecar, only to come a cropper with the VW Kübelwagen Type 82 - the steering wheel is [[CreatorProvincialism on the right (as in, the wrong) side]] and the trunk is on the rear (RL engine) compartment.
** Hell knows, maybe this is some local pirate copy of the WorldWarTwo car.
* CrowningMusicOfAwesome: The latter half of Episode 12. Episode 12 also has [[spoiler:Kanata pretty much ''stopping an entire war from happening'' with AmazingFreakingGrace.]] If that doesn't count as a {{Crowning Moment of Awesome}}, nothing does.
** Also "Servants of Fire". Especially when it plays during Takemikazuchi's big reveal.
** The Morricone-esque score as Rio and Kanata are walking through the town in episode 10, which is itself a stripped-down version of “''Servantes Du Feu''”.
** The opening song, Hikari no Senritsu by Kalafina.
* EpilepticTrees: A certain [[{{Imageboards}} image board]] took to this series like moss to... [[{{Metaphorgotten}} something wet]], had several WildMassGuessing threads on the setting, the characters and the episodes, and set up a [[http://soranowoto.wikia.com/wiki/So_Ra_No_Wo_To_Wiki wiki]] to gather them all.
* FanNickname: The series itself has been referred to as ''Manga/KOn'' season 2 or Military K-On due to the similar art style and the fact they're both about anime girls playing instruments. Also called /k/-On from time to time ([[DontExplainTheJoke /k/ being 4chan's Weapons board]]). And War-On, and probably a whole host of other, similar names. Sadly, no one seems to be going for [[SengokuBasara Guns-On]]...
** The series has also been jokingly named [[ModernWarfare Call of K-On! Moe Warfare 2]]
** 'Grace' for the blond trumpeter in the flashback. [[spoiler:Real name, Princess Iliya.]] (Incidentally, her name was in the credits for episode 1, but who reads those, amirite?)
** "Tank-kun" for the Takemikazuchi.
** '''[[MemeticMutation AIJOU YUUJOU]]''' is actually titled "Girls, Be Ambitious".
* InternetBackdraft: In the non-fans camp, some people think TheyWastedAPerfectlyGoodPlot; others find the ending [[{{Narm}} full of silly drama, contrivances and cheese]]; and then, some never got to watch it because of the [[BlindBashing ''Military K-ON!'']] thing.
* LesYay: Kanata looks up to Rio as an OneeSama. Rio and Filicia keep sharing meaningful glances and IntertwinedFingers. Noël calls Kanata 'her light' and they share a LuminescentBlush.
** Starting in episode 5, Kanata and Noël get in on the hand-holding as well.
** Filicia has an interesting way of testing people's language skills:
--->''You have really nice breasts, don't you? I'm rather fond of them. I wonder if it would be alright if I play with them for a bit? Would it be alright if I played with your entire body? --Just as I thought, you don't speak any Helvetian.''
** Earlier in the same episode, Noël stops A’isha from trying to attack her by groping her bare breast.
** After the GrandFinale, Noël/A’isha is widely considered all but canon.
** The 7.5 {{OVA}}. Filicia’s [[CrowningMomentOfFunny senseless self-sacrifice]].
** In episode 13, Kanata states it's her dream to accompany Rio all over the world, and Rio is perfectly happy with having her come along.
** Filicia states that she will always be waiting for Rio in case she ever wants to come home.
** In the game, Rio almost kisses another girl and Filicia shows jealousy.
* MemeticMutation: Usage of the term [[http://infinitemirai.wordpress.com/2013/10/06/prologue-the-meaning-of-speculah-in-sora-no-woto/ "speculah"]] appears to have originated here and was later adopted by ''Anime/PuellaMagiMadokaMagica'' fans.
* {{Moe}}: [[{{Dissimile}} Perceived similarities]] to ''{{K-ON}}'' aside, the series is definitely one of these.
* NightmareFuel: [[spoiler:The corpse of the nameless soldier in episode 7. Especially when he grins, telling Felicia to ''commit suicide.'' Even worse is that it's all Felicia's hallucination, so really, she nearly talks ''herself'' into dying.]]
* TaintedByThePreview: People had some choice words to say when the first animation artwork came out, revealing ''Manga/KOn''[='s=] art style, instead of Mei Kishida's original [[http://static.tvtropes.org/pmwiki/pub/images/soranowoto.jpg concept art]].
** Others got tainted by the credits roll. A series by the guy who directed ''ElfenLied'' and written by the author of ''{{MAI-HIME}}'' suggested a certain [[BreakTheCutie artistic]] [[KillEmAll direction]], and were dissapointed when [[spoiler: it turned out they were only right about the BreakTheCutie part]].
* TearJerker: A good few in episode 7.
** And the ending of episode 10.
** ''I... you... same.''