system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How was Darth Vader introduced to Palpatine's new government?

Obviously his identity as Anakin would be closely guarded, as that'd make Palpatine's handling of the Jedi inconsistent to outside viewers. The general public could never know Palpatine was a Sith Lord, thus making Vader's position...odd. Was he instantly Palpatine's right-hand to everyone, with some BS explanation, or was he slowly introduced over time? 

Follow-up question; did anyone (especially high-ranking military officers) see the disconnect of Vader openly using the Force and Palpatine's history of the Jedi?
gpt
Vader didn't have much of an official position. People in the Imperial military obviously followed him, but he lacked the official position of Tarkin. 

Vader was the Emperor's personal boogeyman. No one knew what he really was, but the (relatively) few people that knew of his existence knew to not get in his way. If you were an Imperial, you were fine as long as you didn't question him. If you weren't, you better hope that he doesn't know of your existence.