Such a decision by the Catalan government would clearly be against the Spanish Constitution and therefore illegal. The constitution makes it “the Army’s mission is to guarantee the sovereignty and independence of Spain, to defend its territorial integrity and the constitutional set up” so such a move would invite a military response. Some members of the ruling PP party have already stated that the Guardia Civil should take over the Mossos (Catalan police). 1 There are also members of the army who would be willing to take such action, "Catalan independence? Over my dead body and that of many soldiers" says Colonel Francisco Aleman who also compared the crisis to the start of the Spanish Civil war in 1936. 2  1 Guibernau, Montserrat, ‘Calls for independence in Catalonia are part of an evolution of Spain’s democracy that the country’s constitution may have to come to accommodate.’, London School of Economics and Political Science, European Politics and Policy, 8 October 2012,   2 Mason, Paul, ‘Catalan leaders seek independence vote, legal or not’, BBC News, 5 October 2012,