BATTLE // January 20, 1933
First Battle of Nanawa
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Significance
The First Battle of Nanawa demonstrated the limits of Bolivian numerical superiority against a prepared defensive position in the Chaco War. Despite fielding roughly 9,000 troops against a Paraguayan garrison of approximately 2,500, the Bolivian army under Hans Kundt failed to take the Nanawa complex and suffered around 2,000 casualties in the attempt. The battle established Nanawa as the anchor of Paraguayan defensive resilience in the central Chaco, a reputation built on fortifications developed under the direction of White Russian officers Ivan Belaieff and Nicolas Ern. Bolivia's subsequent attempt to isolate the position by entrenchment also failed when Paraguayan reinforcements arrived, and heavy rains forced a full Bolivian withdrawal. The defeat checked Bolivian offensive momentum and signaled that Paraguayan field engineering and defensive doctrine could offset significant disadvantages in troop strength, a pattern that would continue to shape the wider conflict.
Tactics
Nanawa had been fortified into a horseshoe-shaped defensive complex featuring zig-zag trenches, barbed wire, and machine gun nests. The Bolivian assault consisted of three successive attacks that managed to seize portions of the stronghold before stalling. After these frontal assaults failed, Bolivian forces shifted to a siege approach, attempting to dig a circumvallation trench to isolate the garrison. Paraguayan reinforcements disrupted this effort, and heavy rains compelled the Bolivians to abandon the ground they had taken; Paraguayan forces subsequently recovered those positions.
Forces & casualties
Troop strength
- Bolivia9,000medium
- Paraguay2,500medium
Bolivia fielded a 3.6 : 1 numerical advantage
Casualties
- Bolivia2,000medium22% loss rate
Commanders (2)
Bolivia
Paraguay
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