 16" which warned all the combatants to prepare themselves for the general insurrection in all the northern Italy in order to precede the Allied troops and cooperate for the defeat of nazi-fascist forces The general command of the brigades and the Communist Party emphasized to the maximum the importance of the insurrection which had to be done at any costs, without accepting any agreements, proposals, truces with the enemy that could limit the action of partisans.Detailed plans were designed in order to enter into the cities, protect factories and plants and to prevent the run of nazi-fascist forces.The insurrection began then on 24 and 25 April in the main cities of the north, after that the regional commands spread the codified message "Aldo dice 26x1" ("Aldo says 26x1").