Military Mobilisation During The Hundred Days

During the Hundred Days of 1815, both the Coalition nations and the First French Empire of Napoleon Bonaparte mobilised for war. This article describes the deployment of forces in early June 1815 just before the start of the Waterloo Campaign and the minor campaigns of 1815.

French

Upon assumption of the throne, Napoleon found that he was left with little by the Bourbons and that the state of the Army was 56,000 troops of which 46,000 were ready to campaign. By the end of May, the total armed forces available to Napoleon had reached 198,000 with 66,000 more in depots training up but not yet ready for deployment.

Waterloo Campaign

By the end of May, Napoleon had deployed his forces as follows:
* I Corps (D'Erlon) cantoned between Lille and Valenciennes.
* II Corps ( Reille) cantoned between Valenciennes and Avesnes.
* III Corps ( Vandamme) cantoned around Rocroi.
* IV Corps (Gerard) cantoned at Metz.
* VI Corps (Lobau) cantoned at Laon.
* Cavalry Reserve ( Grouchy) cantoned at Guise.
* Imperial Guard ( Mortier) at Paris.

The preceding corps were to be formed into '' L'Armée du Nord'' (the "Army of the North"), led by Napoleon Bonaparte and would participate in the Waterloo Campaign.

Armies of observation

For the defence of France, Bonaparte deployed his remaining forces within France observing France's enemies, foreign and domestic, intending to delay the former and suppress the latter. By June, they were organised as follows:

''V Corps'' – ''Armée du Rhin'' ( Rapp), cantoned near Strassburg.
* 15th Infantry Division (Commanded by General Rottembourg)
* 16th Infantry Division (Commanded by General Albert)
* 17th Infantry Division (Commanded by General Grandjean)
*:On 20 June 1815 Rapp's three infantry divisions contained 28 Battalions. These 28 Battalions consisted of both Line and Light Infantry Regiments. Belonging to the above three Infantry Divisions were the following Line Infantry Regiments: 18th (3 Battalions), 32nd (2 Battalions), 36th (2 Battalions), 39th (2 Battalions), 40th (2 Battalions), 57th (3 Battalions), 58th (2 Battalions), 101st (2 Battalions), 103rd (2 Battalions) and the 104th (2 Battalions). The 7th Light Infantry Regiment (3 Battalions) and the 10th Light Infantry Regiment (3 Battalions) also belonged to Rapp's Infantry Divisions.
* 7th Cavalry Division (Commanded by General Merlin)
** 1st Brigade (Commanded by General Grouvel)
**:2nd and 7th Chasseurs à Cheval Regiments
** 2nd Brigade (Commanded by General Favier)
**:11th and 19th Dragoon Regiments
*National Guard Brigade (Commanded by General Berckheim)
*:The 3rd, 4th, and 5th Battalions of the National Guard of the Bas-Rhin and the 6th, 7th and 8th Battalions of the National Guard of the Haut-Rhin. Two National Guard Lancer Cavalry Regiments also appear to have been attached to Berckheim's command – a Haut-Rhin National Guard Lancer Regiment (137 men) and a Bas-Rhin National Guard Lancer Regiment (405 men)
* Artillery: 46 guns
* Total 20,000–23,000 men.

''VII Corps'' – '' Armée des Alpes'' ( Suchet). Based at Lyons, this army was charged with the defence of Lyons and to observe the Austro-Sardinian army of Frimont. Its composition in June was:
* 22nd Infantry Division (Commanded by General Pacthod)
** 1st Brigade (Commanded by General Mesclop)
**:7th Line Infantry Regiment (3 Battalions) and the 14th Line Infantry Regiment (2 Battalions)
** 2nd Brigade (Commanded by General Bouvard)
**:20th Line Infantry Regiment (3 Battalions) and the 24th Line Infantry Regiment (2 Battalions)
* 23rd Infantry Division (Commanded by General Dessaix)
** 1st Brigade (Commanded by General Montfalcon)
**:67th Line Infantry Regiment (3 Battalions) and the 6th Light Infantry Regiment (2 Battalions). The two battalions of the 6th Light Infantry Regiment had been detached to Marshal Brune's II Corps of Observation – see below
** 2nd Brigade (Commanded by Brigadier General )
**:42nd Line Infantry Regiment (2 battalions) and the 53rd Line Infantry Regiment (2 Battalions)
* 15th Cavalry Division (Commanded by General Quesnel)
** 1st Brigade (Commanded by General Meyer)
**:10th Chasseurs à Cheval and the 18th Dragoon Regiments. This division had only one brigade.
* 6th National Guard Infantry Division
* 7th National Guard Infantry Division
* 8th National Guard Infantry Division
* 42–46 guns
* Total 13,000–23,500 men

''I Corps of Observation'' – ''Armée du Jura'' Based at Belfort and commanded by General Claude Lecourbe, this army was to observe any Austrian movement through Switzerland and also observe the Swiss army of General Bachmann. Its composition in June was:
* 18th Infantry Division (Commanded by General Abbé)
** 1st Brigade (Commanded by General Martel)
**:6th Line Infantry Regiment (2 Battalions) and the 52nd Line Infantry Regiment (2 Battalions)
** 2nd Brigade (Commanded by General Clavel)
**:62nd Line Infantry Regiment (2 Battalions) and the 102nd Line Infantry Regiment (2 Battalions)
* 8th Cavalry Division (Commanded by General Castex)
** 1st Brigade (Commanded by General Meuziau)
**:2nd and 3rd Hussar Regiments
** 2nd Brigade (Commanded by General Rambourg)
**:13th Chasseurs à Cheval Regiment
* 3rd National Guard Infantry Division
* 4th National Guard Infantry Division
* Artillery: Three foot artillery batteries – two of which replaced a horse artillery battery which was sent back to Rapp's V Corps (24 guns)
* Total 5,392–8,400 men

''II Corps of Observation'' – '' Armée du Var''. Based at Toulon and commanded by Marshal Guillaume Marie Anne Brune, this army was charged with the suppression of any potential royalist uprisings and to observe General Bianchi's Army of Naples. Its composition in June was:
* 24th Infantry Division;
* 25th Infantry Division;
*: Belonging to the above two infantry divisions were the following Line Infantry Regiments: 9th (3 Battalions), 13th (2 Battalions), 16th (2 Battalions), 35th (2 Battalions) and 106th (2 or 3 Battalions). The 14th Light Infantry Regiment (2 Battalions) also belonged to one of these divisions. Attached to Brune's army were two battalions of the 6th Light Infantry Regiment detached from Marshal Suchet's VII Corps.
* Cavalry: 14th Chasseurs à Cheval Regiment;
* Artillery: 22 guns
* Total 5,500–6,116 men.

''III Corps of Observation'' – Army of the Pyrenees orientales. Based at Toulouse and commanded by General Charles Mathieu Isidore Decaen, this army observed the eastern Spanish frontier. Its composition in June was:
* 26th Infantry Division (Commanded by General Harispe) ;
** 1st Brigade (Commanded by General Beauvais)
**:3rd Light Infantry Regiment (2 Battalions)
** 2nd Brigade (Commanded by General Bagnetis)
**:66th Line Infantry Regiment (3 Battalions) and the 94th Line Infantry Regiment (2 Battalions)
* Cavalry: 5th Chasseurs à Cheval Regiment (Commanded by General Cavrois) ;
* Artillery: Three foot artillery batteries (24 guns);
* Total 3,516–7,600 men.

''IV Corps of Observation'' – Army of the Pyrenees occidentales. Based at Bordeaux and commanded by General Bertrand Clauzel, this army observed the western Spanish frontier. Its composition in June was:
* 27th Infantry Division (Commanded by General Fressinet)
** 1st Brigade (Commanded by General Charras)
**:60th Line Infantry Regiment (2 Battalions)
** 2nd Brigade (Commanded by General Dauture)
**:79th Line Infantry Regiment (2 Battalions) and the 81st Line Infantry Regiment (2 Battalions)
* Cavalry: 15th Chasseurs à Cheval Regiment (Commanded by General Guyon)
* Artillery: Three foot artillery batteries (24 guns)
* Total 3,516–6,800 men

''Army of the West'' – ''Armée de l'Ouest'' (also known as the Army of the Vendée). Commanded by General Jean Maximilien Lamarque, the army was formed to suppress the Royalist insurrection in the Vendée during the Hundred Days. The army contained line units as well as gendarmes and volunteers. Its composition in June was:
* One Un-numbered Infantry Division (Commanded by General Brayer);
** 1st Brigade (Commanded by General Estéve)
**:3rd Battalion of the 8th Light Infantry Regiment, a Battalion of the 27th Line Infantry Regiment, 1st Battalion of the 47th Line Infantry Regiment and Foot Gendarmes (170 men)
** 2nd Brigade (Commanded by Colonel Mosnier)
**:2nd Young Guard Tirailleur Regiment (2 Battalions) and the 2nd Young Guard Voltigeur Regiment (2 Battalions)
* One Un-numbered Infantry Division (Commanded by General Travot);
** 1st Brigade (Commanded by Colonel Levavasseur)
**:Parisian Gendarmes (80 men), Marine Artillerymen (240 men), 15th Line Infantry Regiment (2 Battalions), 43rd Line Infantry Regiment (2 Battalions) and the 2nd Battalion of the 65th Line Infantry Regiment
** 2nd Brigade (Commanded by Colonel/General Prevost)
**:3rd Battalion of the 14th Line Infantry Regiment, 26th Line Infantry Regiment (3 Battalions) and some volunteer Vendee Chasseurs (28 men)
* Cavalry: The 4th Squadrons of the 2nd Hussar Regiment, 13th Chassuers à Cheval Regiment, 4th, 5th, 12th, 14th, 16th and 17th Dragoon Regiments
* Artillery: Three foot artillery batteries (24 guns);
Total 10,000–27,000 men.

Seventh Coalition

The Seventh Coalition armies formed to invade France were:

Overview

The forces at the disposal of the Seventh Coalition for an invasion of France amounted to the better part of a million men. According to the returns laid out in secret sittings at the Congress of Vienna the military resources of the European states that joined the coalition, the number of troops which they could field for active operations—without unduly diminishing the garrison and other services in their respective interiors—amounted to 986,000 men. The size of the principal invasion armies (those designated to proceed to Paris) was as follows:

Waterloo Campaign

Wellington's Allied Army (Army of Flanders)

Cantoned in the southern part of the Kingdom of the Netherlands, in what is now Belgium, Field Marshal Arthur Wellesley, 1st Duke of Wellington commanded a coalition army, made up of troops from the duchies of Brunswick, and Nassau and the kingdoms of Hanover, the Netherlands and the United Kingdom.

In June 1815 Wellington's army of 93,000 with headquarters at Brussels was cantoned:
* I Corps (Prince of Orange), 30,200, headquarters Braine-le-Comte, disposed in the area Enghien–Genappe–Mons.
* II Corps ( Lord Hill), 27,300, headquarters Ath, distributed in the area Ath- Oudenarde–Ghent.
* Reserve (under Wellington himself) 25,500, lay around Brussels.
* Reserve Cavalry ( Lord Uxbridge) 9,900, in the valley of the Dendre river, between Geraardsbergen and Ninove.
* Dutch light cavalry observed the frontier into the west of Leuze and Binche

The Netherlands Corps, commanded by Prince Frederick of the Netherlands did not take part in early actions of the Waterloo Campaign (it was posted to a fall back position near Braine), but did besiege some of the frontier fortresses in the rear of Wellington's advancing army.

A Danish contingent known as the Royal Danish Auxiliary Corps commanded by General Prince Frederick of Hessen-Kassel and a Hanseatic contingent (from the free cities of Bremen, Lübeck and Hamburg) later commanded by the British Colonel Sir Neil Campbell, were also on their way to join this army, both however, joined the army in July having missed the conflict.

Wellington had very much hoped to obtain a Portuguese contingent of between 12,000 and 14,000 men that might be boarded on ships and sent to this army. However, this contingent never materialised, as the Portuguese government were extremely uncooperative. They explained that they did not have the authority to send the Prince Regent of Portugal's forces to war without his consent (he was still in Brazil where he had been in exile during the Peninsular War and had yet to return to Portugal). They explained this even though they themselves had signed the Treaty of 15 March without his consent. Besides this, the state of the Portuguese army in 1815 left much to be desired and were a shadow of their former self with much of it being disbanded.

The Tsar of Russia offered Wellington his II Army Corps under general Wurttemberg, but Wellington was far from keen on accepting this contingent.

Prussian Army (Army of the Lower Rhine)

This army was composed entirely of Prussians from the provinces of the Kingdom of Prussia, old and recently acquired alike. Field Marshal Gebhard Leberecht von Blücher commanded this army with General August Neidhardt von Gneisenau as his chief of staff and second in command.

Blücher's Prussian army of 116,000 men, with headquarters at Namur, was distributed as follows:
* I Corps ( von Zieten), 30,800, cantoned along the Sambre, headquarters Charleroi, and covering the area Fontaine-l'Évêque–Fleurus– Moustier.
* II Corps (Pirch I), 31,000, headquarters at Namur, lay in the area Namur-Hannut–Huy.
* III Corps ( Thielemann), 23,900, in the bend of the river Meuse, headquarters Ciney, and disposed in the area Dinant–Huy–Ciney.
* IV Corps (Bülow), 30,300, with headquarters at Liège and cantoned around it.

Minor campaigns

German Corps (North German Federal Army)

This army was part of the Prussian Army above, but was to act independently much further south. It was composed of contingents from the following nations of the German Confederation: Electorate of Hessen, Grand Duchy of Mecklenburg-Schwerin, Grand Duchy of Mecklenburg-Strelitz, Grand Duchy of Saxe-Weimar-Eisenach, Grand Duchy of Oldenburg, Duchy of Saxe-Gotha-Altenburg, Duchy of Anhalt-Bernburg, Duchy of Anhalt-Dessau, Duchy of Anhalt-Kothen, Principality of Schwarzburg-Rudolstadt, Principality of Schwarzburg-Sondershausen, Principality of Waldeck and Pyrmont, Principality of Lippe and the Principality of Schaumburg-Lippe.

Fearing that Napoleon was going to strike him first, Blücher ordered this army to march north to join the rest of his own army. The Prussian General Friedrich Graf Kleist von Nollendorf initially commanded this army before he fell ill on 18 June and was replaced temperately by the Hessen-Kassel General von Engelhardt (who was in command of the Hessen division) and then by Lieutenant General Karl Georg Albrecht Ernst von Hake. Its composition in June was:
* Hessen-Kassel Division (Three Hessian Brigades)- General Engelhardt
** Hessian 1st Brigade (5 battalions) – Major General Prince of Solms-Braunfels
** Hessian 2nd Brigade (7 battalions) – Major General von Muller
** Hessian Cavalry Brigade (2 regiments) – Major General von Warburg (Prussian)
** Hessian Artillery (2 six-pounder batteries) – Najor von Bardeleben (Prussian)
* Thuringian Brigade – Major General Egloffstein (Weimar)
** 1st Provisional Infantry Regiment (4 battalions):
** 2nd Provisional Infantry Regiment (3 battalions)
** 3rd Provisional Infantry Regiment (5 battalions including the Oldenbug Line Infantry Regiment (2 battalions))

Total 25,000

Russian Army (I Army)

Field Marshal Michael Andreas Barclay de Tolly commanded the First Russian Army. In June it consisted of the following:
* III Army Corps – General Dokhturov
* IV Army Corps – General Raevsky
* V Army Corps – General Sacken
* VI Army Corps – General Langeron
* VII Army Corps – General Sabaneev
* Reserve Grenadier Corps – General Yermolov
* II Reserve Cavalry Corps – General Winzingerode
* Artillery Reserve – Colonel Bogoslavsky

Total 200,000

Austro-German Army (Army of the Upper Rhine)

The Austrian military contingent was divided into three armies. This was the largest of these armies, commanded by Field Marshal Karl Philipp, Prince of Schwarzenberg. Its target was Paris. This Austrian contingent was joined by those of the following nations of the German Confederation: Kingdom of Bavaria, Kingdom of Württemberg, Grand Duchy of Baden, Grand Duchy of Hesse (Hessen-Darmstadt), Free City of Frankfurt, Principality of Reuss Elder Line and the Principality of Reuss Junior Line. Besides these there were contingents of Fulda and Isenburg. These were recruited by the Austrians from German territories that were in the process of losing their independence by being annexed to other countries at the Congress of Vienna. Finally, these were joined by the contingents of the Kingdom of Saxony, Duchy of Saxe-Coburg-Saalfeld, Duchy of Saxe-Meiningen and the Duchy of Saxe-Hildburghausen. Its composition in June was:

Swiss Army

This army was composed entirely of Swiss. The Swiss General Niklaus Franz von Bachmann commanded this army. This force was to observe any French forces that operated near its borders. Its composition in July was:
* I Division – Colonel von Gady
* II Division – Colonel Fuessly
* III Division – Colonel d'Affry
* Reserve Division – Colonel-Quartermaster Finsler

Total 37,000

Austro-Sardinian Army (Army of Upper Italy)

This was the second largest of Austria's contingents. Its target was Lyons. General Johann Maria Philipp Frimont commanded this army. Its composition in June was:
* I Corps – Major-General(''Feldmarschalleutnant'') Paul von Radivojevich
* II Corps – Major-General (''Feldmarschalleutnant'') Ferdinand, Graf Bubna von Littitz
* Reserve Corps – Major-General (''Feldmarschalleutnant'') Franz Mauroy de Merville
* Sardinian Corps – Lieutenant-General Count Latour

Total 50,000

Austrian Army (Army of Naples)

This was the smallest of Austria's military contingents. Its targets were Marseille and Toulon. General Frederick Bianchi commanded this army. This was the Austrian army that defeated Murat's army in the Neapolitan War. It was not composed of Neapolitans as the army's name may suggest and as one author supposed. There was however a Sardinian force in this area forming the garrison of Nice

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