I'd like to present here, in graphic form, one of the Diesel Era most dramatic pages.
Civil War in Spain (July 17, 1936 - April 1, 1939) was by no means an internal conflict - both sides, loyalist Republicans and rebellious Nationalists, were supported by foreign powers, accusing each other of being "puppets" in the hands of, respectively, Soviet Union and Germany/Italy. Nor it was a minor conflict - in less than three years, the war claimed about half a million human lives.
You can read a good overview of the Civil War here. For our Network, I prepared a number of posters, mostly Republican, some of them quite surprising.
Arturo Ballester. No Victory Without Discipline. (Socialist Workers' Party, 1936)
Lienas. Socialism is Liberation (Worker's Party of Marxist Unification, 1936)
Tomas, November 7, 1936
J. Huertas, Stay alert! (Socialist Coalition of Madrid, 1937)
Josep Renau, Today more than ever, Victory. (1937)
Jose Bardasano. Communist Propaganda. 1937
Don't forget we are at war! (Government of Catalonia, 1937)
I. Sanchis. Enlist! (Republican Union, 1937)
Les-Barquet. FAI Fights for Humanity. (FAI - Iberian Anarchist Federation, 1937)
For Spain. One, Great and Free. (Nationalist poster, ca. 1937)
Spain. One, Great and Free vs Anarchists. (Nationalist poster, ca. 1937)
J. Cabanas. To Arms, for the Country, Bread and Justice. (Nationalist poster, 1938)
Babiano. Culture is a weapon to fight against fascism. (United Socialist Youth, 1936)
J. Briones. The Republican Left Thank the Russian People for Help.
Internationalists, unite with Spanish people. (International Brigades, 1937)
Artigas. To Defeat Him, We Need Discipline. (Trade Unions, Barcelona, 1937)
Oliver. The claw of the Italian invader. (Madrid City Council, 1937)
Parrilla. All peoples of the world are in the International Brigades. (1937)
Cantos. July 18, 1938
And You? (Unified Socialist Party / General Union of Workers, Catalonia, 1938)
Two pairs (sorry, it was inevitable):
Teach Your Comrade to Read (International Brigades, 1937) and...
... Triplex by A.M. Cassandre, 1930
Arturo Ballester. Hail to the Heroes. (National Confederation of Labor) and...
Attend the Olympics with Lufthansa by Ludwig Hohlwein, 1936 (via paul.malon @ Flickr)
International Solidarity with the Republic:
French poster by Paul Colin...
... and British, by Edward McKnight Kauffer.
Evacuate Madrid by Canavate.
Flas. Subsidies for the (Nationalist) veterans. 1940