The Chaco War was probably the first "modern" conflict in Latin America where military aviation was widely used in all roles. Bolivia, as the reader will find out, had a very powerful military air force, but unfortunately for them and luckily for Paraguay, its high army command did not take advantage of it. On the other hand, the Paraguayan Commander-in-Chief, General Jose Felix Estigarribia used military aviation to help him defeat the enemy on the ground, and the result was clear: the Bolivians were expelled from the Chaco after three years of war. Previous publications have focused on the...