The Chaco War was the first modern conflict in South America. Over time, it became the topic of many volumes published in both Bolivia and Paraguay - first by veterans, such as the commanders-in-chief, and the commanders of army corps', regiments or battalions, and by other ranks, in the form of personal memoirs or wider histories, and using a wide variety of sources. Subsequently, the conflict attracted attention of many foreign writers, foremost from the United States of America and Europe, who researched it with great interest. Hundreds of related articles have also been published. Nevertheless, The Chaco War, 1932-1935 is the first ever concise history of this conflict, providing the reader with the full background to this conflict, the military build-up of the Bolivian and Paraguayan armed forces, a blow-by-blow account of Bolivian penetration of this territory since the early 20th Century, precise details on troops mobilized for the war by both sides, all of the battles fought between the belligerents, and their casualties.