First Battle of Nanawa

Overview

The First Battle of Nanawa was fought from 20 to 26 January 1933 between the Bolivian and Paraguayan armies during the Chaco War. Nanawa, established by the Paraguayans in 1928, was considered the strongest Paraguayan outpost after it was heavily fortified by the end of 1932 under directives of Ivan Belaieff and Nicolas Ern, two White Russian former officers who joined the Paraguayan army in the 1920s. Zig-zag trenches, barbed wire and machine gun nests were built by the garrison around a horseshoe-shaped defence. Nanawa's commander, Col. Luis Irrazábal, summoned under his command four regiments and several minor units which made up the Paraguayan fifth division. The commander-in-chief of the Bolivian army, German World War I veteran Hans Kundt, commanded the Bolivian assault personally in place. The Bolivian army launched three attacks that stalled after seizing some parts of the stronghold. After this failure, the Bolivian troops attempted to dig a trench around the Nanawa complex to isolate it but were met by Paraguayan reinforcements. Heavy rains forced the Bolivians to abandon what they had captured of the complex and the Paraguayans soon recovered these positions.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

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

Forces & casualties

Commanders (2)