# IV Reserve Corps (German Empire)

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

## Formation

IV 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 Gronau, who was recalled from retirement. From 24 July 1916 to 19 December 1917, the Corps was known as Karpathenkorps (Carpathian Corps). The Corps was still in existence at the end of the war as part of the 2nd Army, Heeresgruppe Kronprinz Rupprecht on the Western Front.

### Structure on formation

On formation in August 1914, IV 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
    Corps Troops generally consisted of a Telephone Detachment and four sections of munition columns and trains
In summary, IV Reserve Corps mobilised with 25 infantry battalions, 4 machine gun companies (24 machine guns), 6 cavalry squadrons, 12 field artillery batteries (72 guns) and 3 pioneer companies.
22nd Reserve Division was formed by units drawn from the XI Corps District.
| Corps | Division | Brigade | Units |
| IV Reserve Corps | 7th Reserve Division | 13th Reserve Infantry Brigade | 27th Reserve Infantry Regiment |
| IV Reserve Corps | 7th Reserve Division | 13th Reserve Infantry Brigade | 36th Reserve Infantry Regiment |
| IV Reserve Corps | 7th Reserve Division | 14th Reserve Infantry Brigade | 66th Reserve Infantry Regiment |
| IV Reserve Corps | 7th Reserve Division | 14th Reserve Infantry Brigade | 72nd Reserve Infantry Regiment |
| IV Reserve Corps | 7th Reserve Division | 14th Reserve Infantry Brigade | 4th Reserve Jäger Battalion |
| IV Reserve Corps | 7th Reserve Division | | 1st Reserve Schwere Reiter Regiment |
| IV Reserve Corps | 7th Reserve Division | | 7th Reserve Field Artillery Regiment |
| IV Reserve Corps | 7th Reserve Division | | 4th Company, 4th Pioneer Battalion |
| IV Reserve Corps | 7th Reserve Division | | 7th Reserve Divisional Pontoon Train |
| IV Reserve Corps | 7th Reserve Division | | 4th Reserve Medical Company |
| IV Reserve Corps | 22nd Reserve Division | 43rd Reserve Infantry Brigade | 71st Reserve Infantry Regiment |
| IV Reserve Corps | 22nd Reserve Division | 43rd Reserve Infantry Brigade | 94th Reserve Infantry Regiment |
| IV Reserve Corps | 22nd Reserve Division | 43rd Reserve Infantry Brigade | 11th Reserve Jäger Battalion |
| IV Reserve Corps | 22nd Reserve Division | 44th Reserve Infantry Brigade | 32nd Reserve Infantry Regiment |
| IV Reserve Corps | 22nd Reserve Division | 44th Reserve Infantry Brigade | 82nd Reserve Infantry Regiment |
| IV Reserve Corps | 22nd Reserve Division | | 1st Reserve Jäger zu Pferde Regiment |
| IV Reserve Corps | 22nd Reserve Division | | 22nd Reserve Field Artillery Regiment |
| IV Reserve Corps | 22nd Reserve Division | | 1st Reserve Company, 4th Pioneer Battalion |
| IV Reserve Corps | 22nd Reserve Division | | 2nd Reserve Company, 4th Pioneer Battalion |
| IV Reserve Corps | 22nd Reserve Division | | 2nd Reserve Divisional Pontoon Train |
| IV Reserve Corps | 22nd Reserve Division | | 11th Reserve Medical Company |
| IV Reserve Corps | Corps Troops | | 4th Reserve Telephone Detachment |
| IV Reserve Corps | Corps Troops | | Munition Trains and Columns corresponding to the III Reserve Corps |

## Combat chronicle

On mobilisation, IV Reserve Corps was assigned to the 1st Army, which was on the right wing of the forces that invaded France and Belgium as part of the Schlieffen Plan offensive in August 1914.

## Commanders

IV Reserve Corps had the following commanders during its existence:
| From | Rank | Name |
| 2 August 1914 | General der Artillerie | Hans von Gronau |
| 11 September 1915 | Generalleutnant | Arnold von Winckler |
| 7 August 1916 | Generalleutnant | Richard von Conta |
| 18 August 1918 | General der Infanterie | Richard von Conta |