- Helen Graham. The Spanish Civil War: A Very Short Introduction.
- Ronald Fraser. Blood Of Spain Remarkable oral history of the war based on interviews with survivors made in the 1970s. Significant portions on based on Barcelona.
- Paul Preston. The Spanish Holocaust A harrowing read from the world’s leading expert on the war, and possibly Preston’s crowning achievement, charting the barbarity on both sides but highlighting the difference between popular violence on the Republican side with the state sanctioned terror unleashed by the rebels.
- Antony Beevor. The Battle for Spain: The Spanish Civil War 1936-1939.
- Andy Durgan The Spanish Civil War
- Julien Casanova: España partida en dos: Breve historia de la guerra civil española (2013).
- For context of 1930s in Europe see To Hell and Back: Europe, 1914-1949 by Ian Kershaw
The Spanish military
- Loss of Cuba in Spanish American War of 1898 and its aftermath. (Wikipedia)
- Colonial war in Morocco. Review of Deadly Embrace: Morocco and the Road to the Spanish Civil War (2012) by Sebastian Balfour
- Review of Franco: a biography (1993), Paul Preston. The seminal biography in English