The Federal Rules of Criminal procedure require a prelimininary hearing or indictment within 14 days of arrest. On January 27, 2021, the DC US Attorney received and indictment from the DC Grand Jury that describes in detail the conspiracy to interfere with the January 6, 2021 session of Congress.
Caldwell and others named are members of the Ohio Oath Keepers Ohio subset “Ohio State Regular Militia.” They are looking at one charge that carries up to 20 years. I would expect several of these smaller conspiracies to be linked together in spoke and hub conspiracy with Donald J. Trump as the hub. Here is the indictment.