If you want to be super pedantic (and I do), time travel may not be necessary for the stormtroopers to work.
Star Wars is a long time ago (as of 1977), in a galaxy far away. A ship full of stormtroopers could have come through a wormhole to medieval Earth. Or depending on how long ago Star Wars is, could even have been cryogenically frozen, drifting towards Earth for ages.
If you want to be super pedantic (and I do), time travel may not be necessary for the stormtroopers to work.
Star Wars is a long time ago (as of 1977), in a galaxy far away. A ship full of stormtroopers could have come through a wormhole to medieval Earth. Or depending on how long ago Star Wars is, could even have been cryogenically frozen, drifting towards Earth for ages.
Time travelled forward, so to speak 😄