The bloody 1932-35 Chaco War between Bolivia and Paraguay fundamentally shaped South America in a way that still produces loud echoes today. Yet for English-language readers it remains an obscure conflict bracketed uncomfortably between the First and Second World Wars. This intriguing compilation helps clear a bit of the fog from this particular struggle. More importantly, it offers a series of provocative approaches to understanding the Chaco War’s broader effects on 20th-century nationalism, on the indigenous population of the region, and on the international dimension, especially as regards the politics of petroleum. All of these are very modern issues deserving of more attention from scholars. Kudos to Chesterton for getting this very interesting ball rolling.