2nd Army (German Empire)
Flag of the Staff of an Armee Oberkommando (1871–1918)
|Active||2 August 1914 - 13 January 1919|
|Engagements||World War I|
The 2nd Army (German: 2. Armee / Armeeoberkommando 2 / A.O.K. 2) was an army level command of the German Army in World War I. It was formed on mobilization in August 1914 from the III Army Inspection. The army was disbanded in 1919 during demobilization after the war.
The 2nd Army during World War I, fought on the Western Front and took part in the Schlieffen Plan offensive against France and Belgium in August 1914. Commanded by General Karl von Bülow, the 2nd Army's mission was to support the 1st Army's sweep around the left flank of the French Army and encircle Paris, bringing a rapid conclusion to the war. The 2nd Army laid siege to, and took the Belgian fortresses around Namur, and fought General Charles Lanrezac's French 5th Army at the Battle of Charleroi on August 23–24, 1914 and again at St. Quentin on August 29–30, 1914.
2nd Army bore the brunt of the Allied attack in the Battle of the Somme. It had grown to such an extent that a decision was made to split it into two still-powerful armies. Therefore, 1st Army was reformed on 19 July 1916 from the right (northern) wing of the 2nd Army. The former commander of 2nd Army, General der Infanterie Fritz von Below, took command of 1st Army and 2nd Army got a new commander General der Artillerie Max von Gallwitz. Von Gallwitz was also installed as commander of Heeresgruppe Gallwitz - Somme to co-ordinate the actions of both armies on the Somme.
A large proportion of the Army would be wiped out during the joint Anglo-French offensive on the Somme.
 Order of Battle, 30 October 1918
By the end of the war, the 2nd Army was organised as:
|Organization of 2nd Army on 30 October 1918|
|2nd Army||54th Corps (z.b.V.)||21st Reserve Division|
|12th Reserve Division|
|IV Reserve Corps||14th Division|
|18th Reserve Division|
|44th Reserve Division|
|51st Corps (z.b.V.)||2nd Cyclist Brigade|
|1st Guards Reserve Division|
|22nd Reserve Division|
|Under Army command||17th Reserve Division|
The 2nd Army had the following commanders during its existence.
|2 August 1914||Generaloberst Karl von Bülow||III Army Inspectorate (III. Armee-Inspektion)||Heart attack, retired|
|27 January 1915||Generalfeldmarschall Karl von Bülow|
|4 April 1915||General der Infanterie Fritz von Below||XXI Corps||1st Army|
|19 July 1916||General der Artillerie Max von Gallwitz||Attack Group West||5th Army|
|17 December 1916||General der Kavallerie Georg von der Marwitz||VI Corps||5th Army|
|22 September 1918||General der Infanterie Adolph von Carlowitz||9th Army|
- Armee-Abteilung or Army Detachment in the sense of "something detached from an Army". It is not under the command of an Army so is in itself a small Army.
- Armee-Gruppe or Army Group in the sense of a group within an Army and under its command, generally formed as a temporary measure for a specific task.
- Heeresgruppe or Army Group in the sense of a number of armies under a single commander.
 See also
- German Army order of battle (1914)
- German Army order of battle, Western Front (1918)
- Schlieffen Plan
- Cron, Hermann (2002). Imperial German Army 1914-18: Organisation, Structure, Orders-of-Battle [first published: 1937]. Helion & Co. ISBN 1-874622-70-1.
- Ellis, John; Cox, Michael (1993). The World War I Databook. Aurum Press Ltd. ISBN 1-85410-766-6.