Some content in this article is derived from information featured in The X-Adults: Endgame: The Inferno Relit, and, as such, spoilers will be present.
The attack on Palmyra was an assault carried out against Palmyra, a small city near New York City, by the Knights of Meyer during the Shadow Wars. The assault was led by the dark mutant the Dark Flame, who had been seeking a map that would lead to the location of the MBH as well as its weakpoints for which it could be destroyed.
As four elite Flame squadrons descended on Palmyra with a force of eighty Knights of Meyer, Jason Grover received the map from his grandfather and formerly the heir to the throne, Eegan Grover. The fray was eventually joined by the Dark Flame himself.
- The X-Adults: Endgame: The Inferno Relit (first appearance)