The mediocre Hans Kundt led the eventual losers of this conflict, and he was opposed by the Russian emigres Belaieff and Ern.  
integral_, prompt on "quadrature"]      One side in this conflict was forced to ground its Wibault aircraft due to coolant problems, and the other side had previously concluded an arms deal that included six type one hundred forty three scouts with Vickers, paid for by a loan from its Standard Oil company.  The mediocre Hans Kundt led the eventual losers of this conflict, and he was opposed by the Russian emigres Belaieff and Ern.  The native Guarani sided with the winning commander, Estigarribia, and that side captured nearly three hundred thousand prisoners by the war's end. This conflict was originally sparked by rumors of oil, and one hundred degree heat and quebracho made tanks useless.  For 10 points, name this 1932-35 battle between Bolivia and Paraguay over a namesake desert.
integral_, prompt on "quadrature"]      One side in this conflict was forced to ground its Wibault aircraft due to coolant problems, and the other side had previously concluded an arms deal that included six type one hundred forty three scouts with Vickers, paid for by a loan from its Standard Oil company.  
{Gran Chaco} War