Revolutionary Army

Little is known about the Revolutionary forces thus far into the story. What is known is that their movement is a threat to the stability of the world and that they aim to go against the World Government itself. It would also seem that they are knowledgeable, and well aware that it was Luffy who truly defeated Crocodile in Arabasta.

The Revolutionaries base seems to be located in the Grand Line at Paladego.

History
It was revealed that during the World Government's meeting at Mariejoa (the World Government's capital) six years before the current storyline that Dragon, one of the Revolutionaries, was getting stronger and that in 2 or 3 years time he would be a threat to world power.

World Government Reactions
Anyone who becomes a revolutionary is declared a threat and becomes wanted by the World Government. What the motives are of the Revolutionaries remain unknown but according to the Counsel of Kings their ideals and actions are dangerous. Any country displaying signs of revolution runs a risk of being targeted by the World Government. When Drum Island choose to change their government, their King Wapol warned them such actions carry a risk factor and the World Government would never allow it.

Victories
Recently, the revolutionary armies declared a victory in the South Blue at a place called Saint Reia. With this recent victory members of the Revolutionary believe that they can now start on the North Blue, however their leader Dragon believes they are celebrating too soon in the war.

What other victories have occurred are currently unknown, the only hint being is the information told by Robin that many countries have already fallen.