The XI Army Corps / XI AK () was a

corps Corps (; plural ''corps'' ; from French , from the Latin "body") is a term used for several different kinds of organization. A military innovation by Napoleon I, the formation was formally introduced March 1, 1800, when Napoleon ordered Gener ...

level command of the

Prussia Prussia (; ; Old Prussian: ''Prūsija'') was a Germans, German state centred on the North European Plain that originated from the 1525 secularization of the Prussia (region), Prussian part of the State of the Teutonic Order. For centuries, ...

n and

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

Armies An army, ground force or land force is an armed force that fights primarily on land. In the broadest sense, it is the land-based military branch, service branch or armed service of a nation or country. It may also include aviation assets by ...

before and during

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

. XI Corps was one of three formed in the aftermath of the

Austro-Prussian War The Austro-Prussian War (German: ''Preußisch-Österreichischer Krieg''), also known by many other names,Seven Weeks' War, German Civil War, Second War of Unification, Brothers War or Fraternal War, known in Germany as ("German War"), ''Deutsc ...

(the others being IX Corps and X Corps). The Corps was formed in October 1866 with headquarters in

Kassel Kassel (; in Germany, spelled Cassel until 1926) is a city on the Fulda River in North Hesse, northern Hesse, in Central Germany (geography), central Germany. It is the administrative seat of the Regierungsbezirk Kassel (region), Kassel and the d ...

. The catchment area included the newly annexed Province of

Hesse-Nassau The Province of Hesse-Nassau () was a Provinces of Prussia, province of the Kingdom of Prussia from 1868 to 1918, then a province of the Free State of Prussia until 1944. Hesse-Nassau was created as a consequence of the Austro-Prussian War of ...

and the Thuringian principalities (

Saxe-Weimar Saxe-Weimar () was one of the Saxon duchies held by the Ernestine branch of the Wettin dynasty in present-day Thuringia. The chief town and capital was Weimar. The Weimar branch was the most genealogically senior extant branch of the House of W ...

Saxe-Meiningen Saxe-Meiningen ( ; ) was one of the Saxon duchies held by the Ernestine duchies, Ernestine line of the House of Wettin, located in the southwest of the present-day Germany, German state of Thuringia. Established in 1681, by partition of the Ern ...

Saxe-Coburg and Gotha Saxe-Coburg and Gotha (), or Saxe-Coburg-Gotha ( ), was an Ernestine duchy in Thuringia ruled by a branch of the House of Wettin, consisting of territories in the present-day states of Thuringia and Bavaria in Germany. It lasted from 1826 to ...

and Waldeck). During the

Franco-Prussian War The Franco-Prussian War or Franco-German War, often referred to in France as the War of 1870, was a conflict between the Second French Empire and the North German Confederation led by the Kingdom of Prussia. Lasting from 19 July 1870 to 28 Janua ...

it was assigned to the 3rd Army. The Corps was assigned to the VI Army Inspectorate but joined the predominantly Saxon 3rd Army at the start of the

First World War World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

. It was still in existence at the end of the war in the 6th Army, ''Heeresgruppe'' ''Kronprinz'' Rupprecht on the Western Front. The Corps was disbanded with the demobilisation of the German Army after

Franco-Prussian War

During the

, the corps formed part of the 3rd Army. It participated in the battles of

Wissembourg Wissembourg (; South Franconian: ''Weisseburch'' ; German: ''Weißenburg'' ) is a commune in the Bas-Rhin department in Grand Est in northeastern France. Wissembourg was a sub-prefecture of the department until 2015. The name ''Wissembourg'' ...

, Wörth and Sedan.

Between the wars

Initially, the Corps commanded the 21st Division in

Frankfurt Frankfurt am Main () is the most populous city in the States of Germany, German state of Hesse. Its 773,068 inhabitants as of 2022 make it the List of cities in Germany by population, fifth-most populous city in Germany. Located in the forela ...

and the 22nd Division in

. In 1871 they were joined by the Grand Ducal Hessian 25th Division in

Darmstadt Darmstadt () is a city in the States of Germany, state of Hesse in Germany, located in the southern part of the Frankfurt Rhine Main Area, Rhine-Main-Area (Frankfurt Metropolitan Region). Darmstadt has around 160,000 inhabitants, making it the ...

. As the German Army expanded in the latter part of the 19th Century, a new XVIII Corps was formed on 1 April 1899 and took command of the 21st and 25th Divisions. The 38th Division was formed at

Erfurt Erfurt () is the capital (political), capital and largest city of the Central Germany (cultural area), Central German state of Thuringia, with a population of around 216,000. It lies in the wide valley of the Gera (river), River Gera, in the so ...

on the same date and joined the Corps. The Corps was assigned to the VI Army Inspectorate but joined the predominantly Saxon 3rd Army at the start of the

Peacetime organisation

The 25 peacetime

Corps Corps (; plural ''corps'' ; from French , from the Latin "body") is a term used for several different kinds of organization. A military innovation by Napoleon I, the formation was formally introduced March 1, 1800, when Napoleon ordered Gener ...

of the German Army (Guards, I - XXI, I - III Bavarian) had a reasonably standardised organisation. Each consisted of two

divisions Division may refer to: Mathematics *Division (mathematics), the inverse of multiplication * Division algorithm, a method for computing the result of mathematical division Military *Division (military), a formation typically consisting of 10,000 t ...

with usually two infantry brigades, one field artillery brigade and a cavalry brigade each. Each brigade normally consisted of two regiments of the appropriate type, so each Corps normally commanded 8 infantry, 4 field artillery and 4 cavalry regiments. There were exceptions to this rule: : V, VI, VII, IX and XIV Corps each had a 5th infantry brigade (so 10 infantry regiments) : II, XIII,

XVIII 18 (eighteen) is the natural number following 17 (number), 17 and preceding 19 (number), 19. It is an even composite number. Mathematics 18 is a semiperfect number and an abundant number. It is a largely composite number, as it has 6 divisors a ...

and XXI Corps had a 9th infantry regiment : I, VI and XVI Corps had a 3rd cavalry brigade (so 6 cavalry regiments) :the Guards Corps had 11 infantry regiments (in 5 brigades) and 8 cavalry regiments (in 4 brigades). Each Corps also directly controlled a number of other units. This could include one or more :Foot Artillery Regiment : Jäger Battalion :

Pioneer Pioneer commonly refers to a person who is among the first at something that is new to a community. A pioneer as a settler is among the first settling at a place that is new to the settler community. A historic example are American pioneers, perso ...

Battalion :

Train A train (from Old French , from Latin">-4; we might wonder whether there's a point at which it's appropriate to talk of the beginnings of French, that is, when it wa ... , from Latin , "to pull, to draw") is a series of connected vehicles th ...

Battalion

World War I

Organisation on mobilisation

On mobilization on 2 August 1914 the Corps was restructured. 38th Cavalry Brigade was withdrawn to form part of the 8th Cavalry Division and the 22nd Cavalry Brigade was withdrawn to form part of the 3rd Cavalry Division. The 6th Cuirassiers, formerly of the

III Corps III or iii may refer to: Companies * Information International, Inc., a computer technology company * Innovative Interfaces, Inc., a library-software company * 3i, formerly Investors in Industry, a British investment company Other uses * I ...

, was raised to a strength of 6 squadrons before being split into two half-regiments of 3 squadrons each. The half-regiments were assigned as divisional cavalry to 22nd and 38th Divisions. Divisions received engineer companies and other support units from the Corps headquarters. In summary, XI Corps mobilised with 25 infantry battalions, 9 machine gun companies (54 machine guns), 6 cavalry squadrons, 24 field artillery batteries (144 guns), 4 heavy artillery batteries (16 guns), 3 pioneer companies and an aviation detachment.

Combat chronicle

The Corps was assigned to the VI Army Inspectorate in peacetime but joined the predominantly Saxon 3rd Army at the start of the

forming part of the right wing of the forces for the

Schlieffen Plan The Schlieffen Plan (, ) is a name given after the First World War to German war plans, due to the influence of Field Marshal Alfred von Schlieffen and his thinking on an invasion of France and Belgium, which began on 4 August 1914. Schlieffe ...

offensive in August 1914 on the Western Front. It participated in the capture of

Namur Namur (; ; ) is a city and municipality in Wallonia, Belgium. It is the capital both of the province of Namur and of Wallonia, hosting the Parliament of Wallonia, the Government of Wallonia and its administration. Namur stands at the confl ...

and was immediately transferred to the Eastern Front to join the 8th Army in time to participate in the

First Battle of the Masurian Lakes The First Battle of the Masurian Lakes was a German offensive in the Eastern Front 2–16 September 1914, during the Russian invasion of East Prussia. It took place only days after the Battle of Tannenberg where the German Eighth Army encir ...

. It was then transferred to the 9th Army and took part in the

Battle of the Vistula River The Battle of the Vistula, Vistula River, also known as the Battle of Warsaw and Ivangorod, was a major Russian Empire, Russian victory against German Empire, Germany and Austria-Hungary on the Eastern Front (World War I), Eastern Front during ...

and then in the

Bug–Narew Offensive The Bug-Narew Offensive from July 13 to August 27, 1915 was a major German victory during World War I on the Eastern Front. The Imperial German Army broke through 4 heavily fortified positions, inflicted defeats on superior enemy forces and pu ...

. It returned to the Western Front at the end of 1915. It was still in existence at the end of the war in the 6th Army, ''Heeresgruppe'' ''Kronprinz'' Rupprecht on the Western Front.

Commanders

The XI Corps had the following commanders during its existence:The Prussian Machine
Accessed: 19 May 2012

References

Bibliography

* * * * * {{DEFAULTSORT:11th Corps (German Empire) Corps of Germany in World War I Military units and formations established in 1866 Military units and formations disestablished in 1919