 In the 1930s, Pozas served the Republic as Director General of the "Guardia Civil".When the Nationalists rose against the government on June 18, 1936, leading to the Spanish Civil War, Pozas remained loyal and rallied large numbers of police and paramilitary units to the Republic.In the opening days of war he reorganized the loyal elements of the "Guardia Civil" into the "Guardia Nacional Republicana".