Constables in the United States
While Constables primarily serve the Courts, they belong to the executive branch of government.
Robert Sternberg
The main three branches of government are the executive branch, legislative branch and judicial branch. People also need to perform these functions in their own thinking and working. Legislative people like to build new structures, creating their own rules along the way. Executive people are rule followers, they like to be given a predetermined structure in which to work. Judicial people like to evaluate rules and procedures, to analyze a given structure.