Eoin O'Duffy led a brigade of 700 Irish volunteers to fight for Franco during the Spanish Civil War .
Frank Ryan led the Connolly column who fought on the opposite side , with the Republican International Brigades .
Eoin O'Duffy led a brigade of 700 Irish volunteers to fight for Franco during the Spanish Civil War , and Frank Ryan led the Connolly column who fought on the opposite side , with the Republican International Brigades .