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.