The Eastern Bloc of the Revolutionary Armed Forces of Colombia, from September 2010 known as Bloque Comandante Jorge Briceño, in honour of the slain guerrilla leader, is considered by many to be the strongest military faction of the guerrilla group. It is divided into groups of 50-400 combatants which patrol and control different areas of Colombia's Eastern and Central-Eastern territory, as well as helping to carry out the killing, taxation, and arrests necessary to advance the organization's financial and political goals. The specific divisions of the group are arguable. Some of the believed divisions or 'fronts', as they are commonly called, are shown below. Many of these fronts sometimes work together towards a certain mission, while others are further divided into 'columns' and 'companies' with a smaller number of members. For more general information see FARC Chain of Command.