HP, Harry Potter, Fourth Year, Third Task, Graveyard, Duel, Mass Death

“You have been taught how to duel, Harry Potter?” said Voldemort softly, his red eyes glinting through the darkness. At these words Harry remembered, as though from a former life, the dueling club at Hogwarts he had attended briefly two years ago. . . . All he had learned there was the Disarming Spell, “Expelliarmus” . . . and what use would it be to deprive Voldemort of his wand, even if he could, when he was surrounded by Death Eaters, outnumbered by at least thirty to one? He had never learned anything that could possibly fit him for this.
He knew he was facing the thing against which Moody had always warned . . . the unblockable Avada Kedavra curse — and Voldemort was right — his mother was not here to die for him this time. . . . He was quite unprotected. . . .
“We bow to each other, Harry,” said Voldemort, bending a little, but keeping his snakelike face upturned to Harry. “Come, the niceties must be observed. . . . Dumbledore would like you to show manners. . . . Bow to death, Harry. . . .” Rowling, J.K. Harry Potter and the Goblet of Fire (pp. 266-267). Pottermore Publishing. Kindle Edition.

But there were other spells the Victorian, Euro-based mindset Purebloods around him wouldn’t know, and that he had read about in his international history books during the year.
Spells done by the Japanese wizards to the allies while fighting in the Pacific. A certain one no Euro-based mindset was prepared for. Even those who praised the Spartan 300 and their thoughts of “with your shield or on it.”

“I said, bow,” Voldemort said, raising his wand — and Harry only bowed his head marginally and said one word out loud. One spell word. One spell in the Japanese pronunciation. “Kamikaze.”

Kamikaze – Devine Wind. And the reason the allies chose the cities they did to bomb, as it took out the centers for the Magical Enclaves. It did so much damage. And which the Magical Enclaves of Japan have yet to recover from.

And the spell Harry James Potter released upon the unsuspecting Euro-based thinking Purebloods of England now.
Sending up its own mini-mushroom cloud without the resultant radiation to go along with it. But taking out the surrounding area and Manor House along with it.
And leaving over half of the British Pureblood Houses either extinct, or without a Lord suddenly.

Cratering the area such that the area muggles who were first on the scene were shouting “Meteor Strike!” And “Tunguska!” To the confusion of the ministry.
The ministry never did find out why the nearby citizens want certain…Agents? Called Mulder and Scully to come and investigate. And couldn’t get the Mudbloods to stop giggling to find out. Or stop humming the stupid song.

Damn it, it was important! And what do Foxes and Scullery Maids have to do with a crater in the ground and 2/3 of the Wizengamot dead?

The local Aurors never found out, and the DoM closed up shop over it. While the ICW Aurors started an in-depth investigation into Hogwarts and the whole mess, along with their counterparts in the Queen’s government.
They certainly remembered well the spell used and wanted answers as to why someone would be in the mindset to do so again.