In the first volume of this work, Professor Humphreys showed the economic and strategic importance of the Latin American countries in the Second World War, covering the struggle for supremacy in the area between the great powers up to the Rio de Janeiro Conference in 1942.

This second volume opens with the Battle of the Caribbean and continues the story to 1945. The impact of the War on Mexico and Brazil – each of which sent fighting forces abroad – is examined in detail, along with other aspects such as the Bolivian revolution of 1943 and the rise of military dictatorship and Colonel Perón in Argentina. The book ends with a discussion of Latin American aspirations at the time of transition from war to peace in 1945.