The situation was now serious for Bustamante, himself a general. He took the field to fight the rebels, but was defeated. Bustamante went into exile in Europe for a second time (in Italy). The generals arrayed against him then reached a political agreement proclaimed as the "Plan de Tacubaya". This plan proclaimed the presidency vacant and named a provisional president to call elections for a constituent congress. This provisional president was, once again, López de Santa Anna. This was his sixth term as president.