Revolutionaries are forces that are a threat to the stability of a set government, and that they aim to go against the World Government as well as what it stands for. An example of a Revolutionary Force are the Red Rebellion, who faught to free the Skypiean people from the New Birkan Government.
A Revolutionary is an individual that conspires to overthrow an organized government for any reason. Revolutionaries are considered to be an opposing military force and are dealt with as such. They are set with bounties by members of the opposing government while the World Governments Marine forces are simply told to capture or kill.
Revolutionary Forces are normally divided into divisions and are lead by division commanders. They are also lead by a supreme commander and are comprised of several warriors organized into each division based on their skills.