Attorney General
Heads of the departments are called secretaries. But, the other title is the Attorney General which is the head of the Department of Justice.
The United States Attorney General
Chief Justice
In the United States, the title of the head of justice is Chief Justice of the United States. The Chief Justice is the head of the United States federal court system.
The California Department of Justice web site has all the information you are seeking.
You can go to the DMV to receive a new Title, but you must own the vehicle or whatever the title goes to first.
Chief Justice
The title of the head of the Department of State is Secretary of State.
UCMJ (Uniform Code of Military Justice; formerly the articles of war under the WAR DEPARTMENT; now called the Defense Department), trial procedures & court martial reviews.
Most of them hold the title of Secretary of whatever department they head, Secretary of State being an example. The Attorney General heads the justice department. In years past, the Postmaster General was a cabinet member. The usual form of address is "Mr. (or Madame) Secretary", if that's what you were asking.
There is no such title in the US government. A "Secretary" is a member of the President's Cabinet (Executive branch) with authority over a major department or function of the federal government. Attorney General Eric H. Holder, Jr. is head of the Department of Justice. In the Judicial branch, John G. Roberts, Jr. is Chief Justice of the United States (Supreme Court).
No, he is a dictator, but he has taken the title dear leader