The clip comes from Warhammer 40,000: Dawn of War, the real-time strategy game set in Games Workshop's grimdark far future, where Space Marines are genetically enhanced super-soldiers fighting endless wars. Death sounds like this were recorded for units falling in battle, and players later ripped short variants for soundboards and video edits. Because the grunt is so short and instantly recognisable to Warhammer fans, it still works as a quick shorthand for defeat in gaming clips, memes and fan-made battle scenes.