The Army Group Mackensen (german: Heeresgruppe Mackensen, HGr. Mackensen) which operated in Poland between 22 April 1915 and 8 September 1915 during World War I under the command of Field Marshal , was an

army group An army group is a military organization consisting of several field armies, which is self-sufficient for indefinite periods. It is usually responsible for a particular geographic area. An army group is the largest field organization handled by ...

of the

Imperial German Army The Imperial German Army (1871–1919), officially referred to as the German Army (german: Deutsches Heer), was the unified ground and air force of the German Empire. It was established in 1871 with the political unification of Germany under the l ...

. On 8 September 1915 it was renamed Army Group when became its new commander. In June 1916, the Army Group faced the Brusilov Offensive. After an initial retreat, it checked the Russian advance at the

Battle of Kowel The Battle of Kowel (also known as the Battle of Kovel or the Battle of Kovel-Stanislav) took place during World War I, from 24 July to 8 August 1916. It began with an Austrian counter-attack by Alexander von Linsingen south of Kowel, a city loc ...

. After the signing of the Treaty of Brest-Litovsk in March 1918, the Army Group occupied Ukraine. On 31 March 1918, was replaced by and the Army Group was renamed Army Group -Kiev (german: Heeresgruppe Eichhorn-Kiew). It was again renamed on 3 April to Army Group and a last time on 13 August to Army Group Kiev after the murder of General . His successor was . The Army Group was disbanded on 7 February 1919.

Composition April – September 1915

* German Eleventh Army () * Austro-Hungarian Fourth Army ( Archduke Joseph Ferdinand of Austria) * Austro-Hungarian Second Army (), from June 1915 * German Army of the Bug ( Alexander von Linsingen), from 8 July 1915

Composition September 1915 – March 1918

* Austro-Hungarian Fourth Army (Archduke Joseph Ferdinand of Austria, succeeded by ) * German Bug Army ()

Sources

* * on Genealogy.de {{WWI-stub Mackensen Mackensen Poland Military units and formations established in 1915 Military units and formations disestablished in 1919