There was only one armed uprising in Paris after Haussmann, the Paris Commune from March through May 1871, and the boulevards played no important role. The Communards seized power easily, because the French Army was absent, defeated and captured by the Prussians. The Communards took advantage of the boulevards to build a few large forts of paving stones with wide fields of fire at strategic points, such as the meeting point of the Rue de Rivoli and Place de la Concorde. But when the newly organized army arrived at the end of May, it avoided the main boulevards, advanced slowly and methodically to avoid casualties, worked its way around the barricades, and took them from behind. The Communards were defeated in one week not because of Haussmann's boulevards, but because they were outnumbered by five to one, they had fewer weapons and fewer men trained to use them, they had no hope of getting support from outside Paris, they had no plan for the defense of the city; they had very few experienced officers; there was no single commander; and each neighborhood was left to defend itself.