In the first half of the 20th Century, there were several revolutions in Paraguay, starting in 1904, then 1908, 1911-12, 1922-23, 1936 and finally 1947. In 1922, a huge internal crisis in the Liberal Party led to a bloody revolution and for the first time in the history of the country, both sides decided to use aerial power against the enemy. There were not any airplanes available in Paraguay at that time, and very few pilots, just three, so both...

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...