Maréchal-des-logis is a sub-officer

Sub-Officer

Sub-Officer is a term used in many military forces used to indicate ranks below commissioned officers. Sub-Officer is equivalent to the term NCO in the Commonwealth and USA...

 rank used by some units of the French Armed Forces. It is traditionally a horse units rank. There are three distincts ranks of maréchal des logis. These ranks are equivalents of sergeant

Sergeant

Sergeant is a rank used in some form by most militaries, police forces, and other uniformed organizations around the world. Its origins are the Latin serviens, "one who serves", through the French term Sergent....

 ranks.

• Maréchal des logis-chef (equivalent to sergent-chef) : Three chevrons, gold or silver. The higher rank of maréchal des logis. A MDC-chef is commonly referred as simply "chef".
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• Maréchal des logis de carrière (equivalent to sergent) : two chevrons. A maréchal des logis rank is shortened "margis".
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• Maréchal des logis sous contrat : one chevron. This rank is increansingly uncommon in the french military since the end of the conscription.

Both ranks are roughly equivalent to a British or Commonwealth sergeant. The Maréchal des logis-chef corresponds quite closely to the US use of the rank of staff sergeant

Staff Sergeant

Staff sergeant is a rank of non-commissioned officer used in several countries.The origin of the name is that they were part of the staff of a British army regiment and paid at that level rather than as a member of a battalion or company.-Australia:...

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The rank of maréchal des logis is used by the Armoured Cavalry, the Artillery, the Materiel, the Commissary and the Transport corps, all of the French Army

French Army

The French Army, officially the Armée de Terre , is the land-based and largest component of the French Armed Forces.As of 2010, the army employs 123,100 regulars, 18,350 part-time reservists and 7,700 Legionnaires. All soldiers are professionals, following the suspension of conscription, voted in...

, and by the Gendarmerie Nationale

Gendarmerie Nationale (France)

In France, the National Gendarmerie is a branch of the French Armed Forces, in charge of public safety, with police duties among the civilian population. It also contains a military police force and a special forces component . It has a strength of more than 105,975 persons...

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