"Who is a soldier?"

Translation: Ki katona?

[rrmmmm]

Could I say "Ki van egy katona?"

[CarinaYW]

Nope! The 'is' is implied, so by adding 'van', it's like adding an extra 'is' that's already there, and makes the sentence meaningless

[gchaincl]

better Ki a katona

[vvsey]

That is a different sentence.

Who is a soldier? - Ki katona?
Who is the soldier? - Ki a katona?

[DonDiegoAlonso]

Ki egy katona?

[MrtonPolgr]

Acceptable but in this case, it sounds inferior to "Ki katona?" You aren't a newly introduced instance of soldiers, nor is it important that you are one by amount. Your qualities matter.

[EsNkzo]

This is such an oddly worded sentence. You have to realize that the speaker is asking "which ones are soldiers" among a bunch of people who may or may not be soldiers.

Without the visual of a bunch of other people, I couldn't figure out what this sentence was saying (in either language). I literally read all the comments looking for hints. Am I thr only one who didnt "get" it?