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Title: Demi-brigade  
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Subject: French Revolutionary Army, Mixed Order, Troupes de marine, Military history of France, Battle of Truillas
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Not to be confused with 13th Demi-Brigade of the Foreign Legion

Officer and Soldiers of a Demi-Brigade

The Demi-brigade (English: Half-brigade) was a military formation first used by the Revolutionary infantry into a single unit. Each one was headed by a chef de brigade.

The term "Demi-brigade" was chosen to avoid the feudal ancien régime connotations of the term "Régiment". Napoleon Bonaparte ordered the term to be abandoned in 1803, and the demi-brigades were renamed "régiments". The term was reused by certain later units in the French Army, such as the 13th Foreign Legion Demi-Brigade, the only permanent demi-brigade in the modern French Army.


  • Background 1
  • Demi-brigade 2
  • End of the Demi-brigade 3
  • Demi-brigades in Poland 4
  • Notes 5
  • References 6


The French Legislative Assembly voted to declare war on Austria on 20 April 1792, and Prussia joined the war against France. 1792 ended well for France, having conquered the Austrian Netherlands (Belgium) and parts of Germany. However, by early 1793, having guillotined Louis XVI of France on 21 January, France found itself at war with a coalition including Great Britain, the German States, the Kingdom of Piedmont-Sardinia, and Spain in addition to Austria and Prussia.

By mid-1793, France had lost all the conquests of 1792, was fighting on multiple fronts, and threatened with invasion. In an effort to reverse the setbacks, France took a number of measures. In late August 1793, instigated by Lazare Carnot, France introduced the levée en masse, a mass conscription of young unmarried men. Also in late August, a law was passed to amalgamate the infantry, which saw the formation of Demi-brigades.

Organized in 1794 as part of the French Revolutionary Armies. One division was made up of three brigades and one brigade was made up of 3 battalions.


The main problem faced by the French Revolution infantry was a lack of unity. The Army included three main types of infantry, all with different uniforms, organizations, equipment, and rates of pay:

  1. regular infantry inherited from the old Royal regiments of the King, relatively well trained and equipped, dressed in white uniforms and wearing tarleton helmets
  2. national guard units, less well-trained or equipped, with blue uniforms
  3. fédéré volunteer battalions, poorly trained and equipped, with no uniform other than a red phrygian cap and a tricolour cockade

The variations between units created logistical problems, and animosity (due to different rates of pay) among units.

The purpose of the Demi-brigade was to blend all three formations into a single unit, with identical equipment, organization, pay, and uniforms. A Demi-brigade consisted of three infantry battalions: one battalion of regulars (from old Royal regiments), and two battalions of either volunteers or national guards. Each battalion had the same organization of one company of grenadiers (heavy infantry) and eight companies of fusiliers (regular infantry). On paper, a Demi-brigade would have 2,437 men and four six-pounder cannons.

The line infantry (Demi-brigade de Bataille, 1792–96 and Demi-brigade d'Infanterie de Ligne, 1796–1803 ) and light infantry (Demi-brigade d'Infanterie Légère); all lacked uniformity in either weapons or equipment. As the French Revolutionary Wars progressed, demi-brigades were issued with specific coloured uniform jackets.

By late 1794, France had completed the re-conquest of the Austrian Netherlands and Rhineland of Germany. The Demi-brigade survived the transition of the French government to the French Directory in 1795, the ending of the First Coalition in 1797 after Napoleon's successful campaigns in Italy, renewed conflict with a Second Coalition, and Napoleon seizing power in 1799 to create the French Consulate.

End of the Demi-brigade

Peace was restored under the Treaty of Amiens in 1802, and Napoleon ordered the reinstatement of the historic term "régiment" in 1803. The Demi-brigades were renamed as regiments.

The term has been revived for various French Army units since the Napoleonic period. Perhaps the most famous unit to be termed a Demi-Brigade is the 13th Foreign Legion Demi-Brigade, the only permanent demi-brigade in the modern French Army.

Demi-brigades in Poland

In the Border Protection Corps (in 1927) and National Defence units (from 1937).


  1. ^ Blanning. p.120-121. Desertion was a problem; the active strength is estimated at 800,000


  • Blanning, T. C. W., The French Revolutionary Wars, 1787-1802. Arnold, 1996.
  • Connelly, Owen. The Wars of the French Revolution and Napoleon, 1792-1815. Routledge, 2006.
  • Crowdy, Terry. French Revolutionary Infantry, 1789–1802. London: Osprey Publishing Ltd., 2004. ISBN 1-84176-660-7
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