Cretan Revolt
Spyromilios had been a member of the Ethniki Etaireia nationalist organization prior to the war and upon its outbreak, was placed as the head of its volunteer corps. He acted as the force commander of 67 gendarmes on the Epirus front and was in the battles around Preveza and Nikopolis. Having made a name for himself within the Ethniki Etaireia, he was later commissioned to care for refugees from Crete following the Cretan Revolt (1897-1898).