Wouldn't "Scendi" be more appropriate than "Scendere", since you're issuing a command?

I can say you're right, but "Scendi" is referring only to one person.
It's like: "(You) Disembark" where "you" is the 2nd singular person!

"Scendere" is infinite form, which could be appropriate also for more than one man! :)

Unless the localization doesn't allow to translate for multiple persons. In that case it would be:
-One person: "Scendi"
-More persons: "Scendete"

Oh right, I didn't take multiple people into account.

Yes :) that's the point!

Anyway, there's a ticket update about the translation of the "drop down ladder" action! :)

New update about the "Copy my stance" command, which is wrong since Arma 2 (I don't remember if this command was there in the previous games too).

Here is the update:

"The "Copy my stance" command is translated as "Stare bassi" which means "Stay low".
A correct translation would be "Imitare\seguire\copiare la mia postura" which means "Imitate\follow\copy my stance". "

New update for the game menu "Hide" button, which has a wrong translation.

New update for the "take [object]" in the action menu.

"The "Take [object]" button in the actions menu is translated as "Prendilo [object]", which is wrong. "Prendilo" means "Take it", so if you say "Prendilo binocolo" you say something like "Take them binoculars" which in italian is scorrect and redundant.
The correct translation would be simply: "Prendi [object]" which means "Take (the) [object]" "

Thanks for the reports, I have corrected this. Please report if you find something new.

Affirmative ;)