Chaco War 

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A Paraguayan Junkers airplane at the Isla de Poí airbase.  A crater left by a Bolivian plane bomb holds 25 Paraguayan soldiers.

Bolivian aircraft bombed a Paraguayan convoy. 
One of the two Bolivian tanks captured by Major José Lezcano's
Paraguayan unit on Dec. 10, 1933 at Saavedra.

A 1932 Paraguayan cartoon depicting the Bolivian Commander-in-Chief 
General Hans Kundt.
Paraguayan trenches built to hold conquered territory.