# XII (Royal Saxon) Reserve Corps

The XII (Royal Saxon) Reserve Corps (German: XII. (Königlich Sächsisches) Reserve-Korps / XII RK) was a corps level command of the German Army in World War I.

## Formation

XII Reserve Corps was formed on the outbreak of the war in August 1914 as part of the mobilisation of the Army. It was initially commanded by General der Artillerie Hans von Kirchbach, recalled from retirement. It was still in existence at the end of the war in Armee-Abteilung C, Heeresgruppe Gallwitz on the Western Front.

### Structure on formation

On formation in August 1914, XII Reserve Corps consisted of two divisions, made up of reserve units. In general, Reserve Corps and Reserve Divisions were weaker than their active counterparts
    Reserve Infantry Regiments did not always have three battalions nor necessarily contain a machine gun company
    Reserve Jäger Battalions did not have a machine gun company on formation
    Reserve Cavalry Regiments consisted of just three squadrons
    Reserve Field Artillery Regiments usually consisted of two abteilungen of three batteries each, though the Reserve Field Artillery Regiments of XII Corps had three abteilungen
    Corps Troops generally consisted of a Telephone Detachment and four sections of munition columns and trains
In summary, XII Reserve Corps mobilised with 26 infantry battalions, 6 machine gun companies (36 machine guns), 6 cavalry squadrons, 18 field artillery batteries (108 guns) and 3 pioneer companies.
24th Reserve Division was formed by units drawn from the XIX Corps District.
| Corps | Division | Brigade | Units |
| XII (Royal Saxon) Reserve Corps | 23rd Reserve Division | 45th Reserve Infantry Brigade | 100th Reserve Infantry Regiment |
| XII (Royal Saxon) Reserve Corps | 23rd Reserve Division | 45th Reserve Infantry Brigade | 101st Reserve Infantry Regiment |
| XII (Royal Saxon) Reserve Corps | 23rd Reserve Division | 45th Reserve Infantry Brigade | 12th Reserve Jäger Battalion |
| XII (Royal Saxon) Reserve Corps | 23rd Reserve Division | 46th Reserve Infantry Brigade | 102nd Reserve Infantry Regiment |
| XII (Royal Saxon) Reserve Corps | 23rd Reserve Division | 46th Reserve Infantry Brigade | 103rd Reserve Infantry Regiment |
| XII (Royal Saxon) Reserve Corps | 23rd Reserve Division | | Saxon Reserve Hussar Regiment |
| XII (Royal Saxon) Reserve Corps | 23rd Reserve Division | | 23rd Reserve Field Artillery Regiment |
| XII (Royal Saxon) Reserve Corps | 23rd Reserve Division | | 4th Company, 12th Pioneer Battalion |
| XII (Royal Saxon) Reserve Corps | 23rd Reserve Division | | 23rd Reserve Divisional Pontoon Train |
| XII (Royal Saxon) Reserve Corps | 23rd Reserve Division | | 1st Saxon Reserve Medical Company |
| XII (Royal Saxon) Reserve Corps | 24th Reserve Division | 47th Reserve Infantry Brigade | 104th Reserve Infantry Regiment |
| XII (Royal Saxon) Reserve Corps | 24th Reserve Division | 47th Reserve Infantry Brigade | 106th Reserve Infantry Regiment |
| XII (Royal Saxon) Reserve Corps | 24th Reserve Division | 47th Reserve Infantry Brigade | 13th Reserve Jäger Battalion |
| XII (Royal Saxon) Reserve Corps | 24th Reserve Division | 48th Reserve Infantry Brigade | 107th Reserve Infantry Regiment |
| XII (Royal Saxon) Reserve Corps | 24th Reserve Division | 48th Reserve Infantry Brigade | 133rd Reserve Infantry Regiment |
| XII (Royal Saxon) Reserve Corps | 24th Reserve Division | | Saxon Reserve Uhlan Regiment |
| XII (Royal Saxon) Reserve Corps | 24th Reserve Division | | 24th Reserve Field Artillery Regiment |
| XII (Royal Saxon) Reserve Corps | 24th Reserve Division | | 1st Reserve Company, 12th Pioneer Battalion |
| XII (Royal Saxon) Reserve Corps | 24th Reserve Division | | 2nd Reserve Company, 12th Pioneer Battalion |
| XII (Royal Saxon) Reserve Corps | 24th Reserve Division | | 2nd Saxon Reserve Medical Company |
| XII (Royal Saxon) Reserve Corps | Corps Troops | | 12th Reserve Telephone Detachment |
| XII (Royal Saxon) Reserve Corps | Corps Troops | | Munition Trains and Columns corresponding to the III Reserve Corps |

## Combat chronicle

On mobilisation, XII Reserve Corps was assigned to the predominantly Saxon 3rd Army on the right wing of the forces that invaded France as part of the Schlieffen Plan offensive in August 1914.

## Commanders

XII Reserve Corps had the following commanders during its existence:
| From | Rank | Name |
| 2 August 1914 | General der Artillerie | Hans von Kirchbach |
| 15 December 1917 | General der Infanterie | Horst Edler von der Planitz |
| 24 July 1918 | Generalleutnant | Max Leuthold |