| Unit Name: | X Army Corps |
| Native Name: | X Cuerpo de Ejército |
| Start Date: | June 1937 |
| End Date: | February 1939 |
| Allegiance: | Republican faction |
| Branch: | Spanish Republican Army |
| Type: | Infantry |
| Specialization: | --> |
| Size: | Army Corps |
| Command Structure: | Eastern Army |
| Garrison: | Barbastro |
| Colours: | --> |
| Colours Label: | --> |
| Battles: | Spanish Civil War |
| Notable Commanders: | Gregorio Jover Cortés |
The X Army Corps was a military formation belonging to the Spanish Republican Army that fought during the Spanish Civil War. During the war it was deployed on the fronts of Aragon, Segre and Catalonia.
The unit was created in June 1937, within the Eastern Army. It covered the front line that ran from the French border to the Sierra de Alcubierre, with its headquarters in Barbastro. During the following months some of its forces intervened in the offensives of Huesca (June), Zaragoza (August) and Biescas (September-October), which, however, did not bear the desired results: both Huesca and Jaca remained in the hands of the nationalist forces.
In the spring of 1938, during the Aragon Campaign, the X Army Corps performed poorly. From the first moment its forces fell back from the enemy push, particularly the 31st Division, whose withdrawal —Which eventually became a rout— left the southern flank of the 43rd Division unprotected. At the beginning of April the X Army Corps, after a long retreat, they maintained their positions on the defensive line of the Segre River. Some elements of its 34th Division intervened in the Balaguer Offensive at the end of May. At the beginning of the Catalonia Campaign the X Army Corps continued to cover the Segre line. Its troops offered resistance to the nationalist assault, although at the beginning of 1939 the formation was forced to withdraw towards the French border along with the rest of the Eastern Army.
| Date | Attached Army | Integrated divisions | Battlefront | |
|---|---|---|---|---|
| June 1937 | Aragon | |||
| July 17, 1937 | Eastern Army | Aragon | ||
| December 1937 | Eastern Army | Aragon | ||
| May 1938 | Eastern Army | Segre | ||
| September 3, 1938 | Eastern Army | Segre | ||
| December 27, 1938 | Eastern Army | Segre | ||
| January 2, 1939 | Eastern Army | Segre |