On April 27, 1927, President Carlos Ibáñez del Campo merged the Fiscal Police ("Policía Fiscal"), the Rural Police ("Policia Rural"), and the existing Corps of Carabineros to form the Carabineros de Chile, one unified, paramilitary and national security institution under the direction of the national government. The organization still carries the name given to it by Ibáñez, who became the Carabineros' first Director General. In 1929 its official coat of arms – two white crossed carbines in a green shield – was formally adopted. The service in 1930 became one of the pioneer mobile police forces in Latin America. By 1933 the Investigations Police of Chile was created in the basis of the investigations service. The roots of today's NCO School began in 1934 when in Santiago's Macul commune, the service's mounted command began training NCOs and enlisted personnel independently. In 1939 the service received its own staff college, the Police Sciences Academy, and the mounted training squadron began the present day NCO School in 1951.