Kammala wannan jumla: A 1932, Duarte Costa ya taka rawar gani a cikin
Juyin Juya Halin Tsarin Mulki, yunkurin da aka yi na sake dawo da tsarin mulki ga Brazil. Duarte Costa ya kafa "Batalyon na Bishop" don yin yaƙi a gefen sojojin Constitutionalist kuma ya taimaka wajen tallafawa rundunar ta hanyar sayar da kadarorin diocese tare da kayansa na kansa. Duk da haka, rundunar Duarte Costa ba ta yi yaƙi ba, wanda ya zama tushen jin kunya a gare shi. Goyan bayan Duarte Costa ga Juyin Juya Halin Tsarin Mulki ya sa ya sami ƙiyayya da Shugaba Vargas, wanda ke nuna farkon dogon lokaci na dangantaka mai wuya tsakanin Duarte Costa da gwamnatin Brazil.