France and the United Kingdom faced a series of problems that made the mid-year of 1931 anything but peaceful.
Of course, with their respective backers in South America embroiled in chaos, the war between Paraguay and Bolivia became a fair one-on-one fight once again.
In terms of territory and population, Bolivia had a significant advantage. However, Bolivia's early focus on purchasing tanks and airplanes for weapons and equipment proved to be of little use in the Northern Chaco region.
On the other hand, Paraguay, with its large number of light weapons, could maintain a firepower advantage in the Northern Chaco area.
Especially various types of machine guns were like killing gods in the Northern Chaco region—a few machine guns could defend a position and delay the enemy's advance beyond the frontline.