Noun
marshalcy (plural marshalcies)
Synonym of marshalship
The military policing responsibilities of the Marshal of France were delegated to the Marshal's provost, whose force was known as the Marshalcy because its authority ultimately derived from the Marshal. Source: Internet
The resulting force was also known as the Maréchaussée, or, formally, the Constabulary and Marshalcy of France. Source: Internet