There's a fucked up old black and white science fiction movie where astronauts go to "Planet X" and... freak out and kill everything in sight because what they find are basically just Earth life forms except larger and just sitting there. The feeemale of the crew screams, they shoot. And then again, and again.
Eventually, the rocket takes off after leaving a magical nuclear weapon that blows up the entire planet. The narrator voice says, at that moment, "we brought civilization to Planet X."
Kiska and Attu, too. Nasty little "fight" with the Japanese during the war that isn't widely known, in the Aleutian island chain south west of Mainland Alaska.
It remind me of James Blish book "A Case of Conscience" from 1958, way more talking but ultimately ends the same. Also author was either a disgusting catochud or got too immersed in narration, i'm not familiar with his other works so idk.