Field marshal (or field-marshal, abbreviated as FM) is a very senior military rank, ordinarily senior to the general officer ranks. Usually it is the highest rank in an army, and when it is, few (if any) persons are appointed to it. It is considered as a five-star rank (OF-10) in modern-day armed forces in many countries. Promotion to the rank of field marshal in many countries historically required extraordinary military achievement by a general (a wartime victory). However, the rank has also been used as a divisional command rank and also as a brigade command rank. Examples of the different uses of the rank include Austria-Hungary, Prussia, Germany and Sri Lanka for an extraordinary achievement; Spain and Mexico for a divisional command (Spanish: mariscal de campo); and France, Portugal and Brazil for a brigade command (French: maréchal de camp, Portuguese: marechal de campo). Not to be confused with the German rank of Generalfeldmarschall or Reichsmarschall

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