[1] The Generalitat de Catalunya and all democratic parties reached this agreement with the CNT-FAI to try to pacify public safety, severely altered since the July 1936 military coup, under the auspices of the anarcho-syndicalist organization.
The militant anarchist Aurelio Fernández Sánchez was appointed general secretary,[2] while in one way or another Rafael Vidiella (PSOE) and Joaquim Olaso i Piera (PSUC) were also present,[3] as well as Tomàs Fàbregas Valls (ACR).
The Board was composed of delegates from the Control Patrols, the National Republican Guard, the political parties and the trade unions.
[1] However, the control patrols were completely autonomous and were easily carried away by ideological exaltation, as was the case with the La Fatarella Events: it was not until the arrival of the undersecretary of the Presidency of the Generalitat Martí Rouret, accompanied by the same Aurelio Fernandez, who put a stop to the murders.
[4] When the Generalitat ordered the dissolution of the violent control patrols on March 26, 1937, the Internal Security Board tried to resist; until it was dissolved after the defeat of the CNT-FAI and the POUM in the May Days.