 Complete the following phrase:  In September 1939, Moreno and Rivadavia traveled together to Brazil with naval cadets. However, before they could return, four s had to be sent to escort the ships back, as the Second World War had erupted in Europe. Since Argentina remained neutral in the war, Moreno saw little active service. By 1949, the venerable dreadnought had been decommissioned into reserve and was used as a barracks. In 1955, Moreno was used as a prison ship during the 