Latin America during World War II on the battlefield in Europe was divined after the Casablanca Conference. The President of the U.S., Franklin D. Roosevelt on his way back from Morocco met the President of Brazil, Getulio Vargas, in Natal, Rio Grande do Norte, this meeting is known as the Potenji River Conference, and defined the creation of the Brazilian Expeditionary Force. In 1940, after he expressed his concern to President Franklin D. Roosevelt over Nazi influence in Latin America, Nelson Rockefeller of the famous family was appointed to the new position of Coordinator of Inter-American Affairs (CIAA) in the Office of the Coordinator of Inter-American
João Baptista Mascarenhas de Morais to President Washington Luiz and was arrested by the rebels headed by Getúlio Vargas, who became president himself in that same year after ousting Washington Luiz. After release, Mascarenhas continued his career in the army In 1935, while serving as Commander of the Realengo Military School, Mascarenhas de Morais took part in the fight against a communist uprising in Rio de Janeiro. This time his loyalty was with the constitutional government of Getulio Vargas. In 1937 he became a General and was, in the following years, commander of the 9th and 7th and military regions in Recife and São Paulo