Marshalcy (or occasionally maréchaussée or marechaussee) may refer to: The office and rank of a marshal Any gendarmerie or military force component with jurisdiction in civil law enforcement Maréchaussée, the French Ancien Régime military police force Royal Marechaussee, the military police force of the Netherlands Maréchaussée (Grimm), the 12th episode of season 4 of the television series Grimm See also Marshalsea, a former prison, London