Security and Assault Corps

Following the overthrow of the Spanish monarchy in April 1931, the new Republican regime created the Assault Guards (Spanish: Guardia de Asalto) as a gendarmerie-style national armed police that could be used to suppress disorders in urban areas. Armed and trained for this purpose, the Assault Guards was intended to provide a more effective force for internal security duties than the ordinary police or the conscription-based army. Since its creation in 1844 the 25,000 strong Civil Guard had been available to be ordered into the larger cities in the event of unrest there, but this efficient rural force —its officers drawn from the regular army and with an oppressive image— was not seen as being in sympathy with the new Republic or particularly suited for urban operations.

The Ministro de la Gobernación Miguel Maura accordingly reorganized elements of the existing police into a more heavily armed republican security force for service in the cities, leaving the countryside to the Civil Guard. As an initial step Compañías de Vanguardia (Vanguard Companies) were created in the principal urban areas. These were subsequently redesignated as Sección de guardias de Asalto. As a part of the reformed force they provided an instrument for controlling mass demonstrations; similar in function to modern riot squads. In 1932, the Security Corps was renamed as the Security and Assault Corps.

During the Spanish Civil War, Assault Guards stayed largely loyal to the Republican government. Of all the reserve forces that had remained in the government zone, the Assault Guard was the most highly regarded by most of the population. This made a large number of serving soldiers decide to join this body; to avoid the misgivings and suspicions that military affiliation had created among the workers' militias. This fact reached the point that the President of the Ministry of War, Largo Caballero, had to prohibit Army officers from joining the Assault Guard without authorization from the Ministry of War. The Assault Guards distinguished themselves as a reliable and shock infantry to which the Republic always entrusted its most delicate operations,^[3] such as the battles of Madrid and Guadalajara, the securing of Belchite, and the suppression of the events in Barcelona during May.^[4][5] Later in the war, the Assault Corps became the elite of the Spanish Republican Army. The writer George Orwell reflected it in one of his most outstanding works:^[6]

"They were splendid troops, much the best I had seen in Spain [...]. I was used to the ragged, scarcely-armed militia on the Aragón front, and I had not known that the Republic possessed troops like these. It was not only that they were picked men physically, it was their weapons that most astonished me..."

The Carabineros (frontier guards) and the Assault Guards were the Spanish police and paramilitary corps where the 1936 coup found the least support. When the Civil War began, over 70% of the Assault Guards stayed loyal to the Spanish Republic. On the other hand, in the Civil Guard the breakup of loyalists and rebels was distributed evenly at around 50%, although the highest authority of the corps, Inspector General Sebastián Pozas, remained loyal to the republican government.^[7]

Before the Civil War, eight-pointed and six-pointed silver stars were part of the officers' uniforms of the Assault Guards. Following the breakout of the Civil War, and the ensuing reorganization of the Spanish Republican Armed Forces some changes were introduced and ranks were simplified.

The silver 8-pointed and six-pointed stars that had been worn between 1931 and 1936 were replaced by the five pointed red star.^[8]

Rank group	General / flag officers										Senior officers						Junior officers
Cuerpo de Seguridad y Asalto (1931–1936) v t e
											Coronel		Teniente coronel		Comandante		Capitán		Teniente			Alférez
Cuerpo de Seguridad y Asalto (1936–1939) v t e
											Coronel		Teniente coronel		Comandante		Capitán		Teniente			Alférez

Rank group	Senior NCOs																						Junior NCOs						Enlisted
Cuerpo de Seguridad y Asalto (1931–1936) v t e
	Subteniente						Subayudante	Brigada	Sargento primero		Sargento												Cabo						Guardia primero						Guardia
Cuerpo de Seguridad y Asalto (1936–1939) v t e
							Brigada		Sargento														Cabo												Guardia

• Carabineros
• Spanish Civil Guard
• Spanish Republican Army

• Orwell, George (1938). Homage to Catalonia.
• Thomas, Hugh (1976). Historia de la guerra civil española. ISBN 2-221-08559-0.

•   Media related to Guardia de Asalto at Wikimedia Commons
• History section of Subinspector Cartujo's personal page