"Fighting the 'Bugs' isn't as easy as you think - a basic Changeling worker grunt could be hatched and raised to adulthood within two weeks, the other army 'bugs' slightly longer. Every time we killed a thousand Changelings at a cost of one Royal Guard it was a net victory for the the Changelings; they would care even less how many thousands they threw at us than us caring how much ammo and magic we expended.
In the end, we have to hit them where it really hurts them - at their hives, in the deep caverns, where they live, where they eat, and where they breed.
Sure, the hives are often deathtraps - narrow, pitch-black passageways, impassable chasms, lost a few buddies at the spike-and-acid-pit booby-traps now and then. We burn our nerves out at days-long jaunts underground, where falling asleep would get the whole squad killed by Bug patrols. We couldn't get the wounded out safely with the bugs ambushing us almost at every corner, so we spent every heart-pounding moment as we crawl through the tunnels wondering if the next second would be our last. Worst part was the noise - the bloody screeching and chiming was always there, echoing in the background, taunting us, keeping us awake and afraid.
But it's all worth the shot once we made it to the central caverns. There's nothing more satisfying then to crush a few dozen Changelings toppling pillars on top of them, and hear their eggs pop as we set the breeding-pits alight with fire-spells.
Take a look at the cavern: this place crawls, good sir! I'm-a burning it all down!!"
---- Corporal Amber Clad, Trottingham 41st Royal Guard Regiment, during the Changeling War.
In the pony comics coming out in November, Chrysalis either begins to systematically replace ponies (who aren't very good actors unlike the soldiers we saw before) who have weird eyes and walk around weird, or is systematically BRAINWASHING the ponies of ponyville.
There's one thing I've never gotten.
WHAT IS WITH THE WRITING MOTIF THAT PEOPLE BRAINWASHED NEVER REMEMBER WHAT THEY DO WHEN BRAINWASHED?! WHAT PURPOSE DOES THAT SERVE IN THE PLOT?! IT FEELS SO UTTERLY POINTLESS!!!!!!