The Battle of the Ebro was the longest and largest battle of the Spanish Civil War and the greatest, in terms of manpower, logistics and material ever fought on Spanish soil. It took place between July and November 1938, with fighting mainly concentrated in two areas on the lower course of the Ebro River, the Terra Alta comarca of Catalonia, and the Auts area close to Fayón (Faió) in the lower Matarranya, Eastern Lower Aragon. These sparsely populated areas saw the largest array of armies in the war. The battle was disastrous for the Second Spanish Republic, with tens of thousands left dead or wounded and little effect on the advance of the Nationalists.
Enrique Líster Forján was a Spanish communist politician and military officer.
The Battle of Belchite refers to a series of military operations that took place between 24 August and 7 September 1937, in and around the town of Belchite, in Aragon during the Spanish Civil War, as part of a much bigger offensive to take Zaragoza, that continued until beginning of November 1937. Since the Offensive of Zaragoza failed, for propaganda reasons, the Republicans started calling it Battle of Belchite instead, so it looked like a victory, the journalists that came to report the victory, including Ernest Hemingway, contributed to this change of names. The Nationalists continued the confusion, since they exploited the "Numantine" defense of the town for propaganda too, to counteract the bad image of the bombing of Guernica.
The Battle of Brunete, fought 24 kilometres (15 mi) west of Madrid, was a Republican attempt to alleviate the pressure exerted by the Nationalists on the capital and on the north during the Spanish Civil War. Although initially successful, the Republicans were forced to retreat from Brunete after Nationalist counterattacks, and suffered devastating casualties from the battle.
The Second Battle of the Corunna Road was a battle of the Spanish Civil War that took place from 13 December 1936 to 15 January 1937, northwest of Madrid. In December 1936, the Nationalists launched an offensive in order to cut the Corunna Road and isolate Madrid, but a Republican counter-offensive stopped the Nationalist advance. The Nationalists cut the Corunna road but failed to encircle Madrid.
The Aragon Offensive was an important military campaign during the Spanish Civil War, which began after the Battle of Teruel. The offensive, which ran from March 7, 1938, to April 19, 1938, smashed the Republican forces, overran Aragon, and conquered parts of Catalonia and the Levante.
The Catalonia Offensive was part of the Spanish Civil War. The Nationalist Army started the offensive on 23 December 1938 and rapidly conquered Republican-held Catalonia with Barcelona. Barcelona was captured on 26 January 1939. The Republican government headed for the French border. Thousands of people fleeing the Nationalists also crossed the frontier in the following month, to be placed in internment camps. Franco closed the border with France by 10 February 1939.
The XYZ Line, also known as the Matallana Line, was a system of fortifications built in 1938 during the Spanish Civil War to defend Valencia, the capital of the Second Spanish Republic. The XYZ Line was a simple system of trenches and bunkers, built to withstand heavy artillery or 450-kilogram (992 lb) aerial bombs, and took advantage of some of the most difficult terrain in Spain in the Iberian System ranges to the north and northeast of Valencia. The XYZ Line was successful at halting the Nationalist advance on Valencia, being one of the last Republican victories of the war, and allowed the Republicans to start the Battle of the Ebro.
The Asturias Offensive was an offensive in Asturias during the Spanish Civil War from 1 September to 21 October 1937.
The Segovia Offensive was a Republican diversionary offensive which took place between 31 May and 6 June 1937, during the Spanish Civil War. The main goal of the offensive was to occupy Segovia and divert Nationalist forces from their advance on Bilbao. After a brief initial advance the offensive failed due to Nationalist air superiority.
The Battle of Caspe took place during the Aragon Offensive of the Spanish Civil War in 16–17 March 1938.
The Levante Offensive, launched near the end of March 1938, was an attempt by Nationalist forces under Francisco Franco to capture the Republican held city of Valencia during the Spanish Civil War. The Nationalists occupied the province of Castellón, but the offensive failed due to bad weather and the dogged resistance of the Republican troops at the XYZ defensive line.
The 11th Division was a division of the Spanish Republican Army in the Spanish Civil War. It was formed in January 1937 in Madrid beginning with the 1st Mixed Brigade which in turn had originated in the Fifth Regiment.
The 45th Division was a division of the Spanish Republican Army in the Spanish Civil War.
The 35th Division was a division of the Spanish Republican Army in the Spanish Civil War.
The 25th Division was one of the divisions of the Spanish Republican Army that were organized during the Spanish Civil War on the basis of the Mixed Brigades. It participated in the battles of Huesca, Belchite, Teruel and Levante.
The 116th Mixed Brigade was a unit of the Spanish Republican Army, integrated into the 25th Division, that participated in the Spanish Civil War.
The 117th Mixed Brigade was a unit of the Spanish Republican Army created during the Spanish Civil War.
The 141st Mixed Brigade was a unit of the Spanish Republican Army during the Spanish Civil War. It participated in the Battle of Belchite, Aragon Offensive, Battle of the Segre and the Catalonia Offensive.
The XII Army Corps was a military formation belonging to the Spanish Republican Army that fought during the Spanish Civil War. Formed by veteran units, throughout the war it took part in prominent intervention in some of the main battles of the war, such as Aragon or the Ebro.
Spanish Republic 
Nationalist Spain