During the Spanish Civil War Madrid was frontline. From November 1936 to March 1937, when the front stabilized, it’s inhabitants were witnesses to one of the most important battles of a conflict that began with the uprising of most of the army against the republican Government the 18th of July of 1936, supported by different political forces, that would soon call themselves Nationals. The military uprising failed in Catalonia, Valencia and Madrid and the Cuartel de la Montaña barracks where the rebels had dug in was assaulted and taken by left wing and anarchist militias. In the northeast of Spain, Navarra, part of Andalusia and the North of Morocco, then a Spanish colony, the rebellion was successful. From those areas the insurgent army directed itself to the capital advancing quickly from two directions, from the north under the command of General Emilio Mola and from the southwest the troops of Brigadier General José Enrique Varela.