In spite of contradictions, a plan for invading the Trentino, or South Tyrol, almost certainly did exist. Whether Garibaldi was alone answerable for it cannot be determined. The Government became suddenly alive to the enormous peril such an attack would involve, and arrested several of the Garibaldian officers at Sarnico. They were conveyed to Brescia, where a popular attempt was made to liberate them; the troops fired on the crowd, and some blood was shed. Garibaldi wrote an indignant protest and retired, first to the villa of Signora Cairoli at Belgirate, and then to Caprera. He did not, however, remain there long.
After this point, the thread of events becomes tangled beyond the hope of unravelment. What were the causes which led Garibaldi into the desperate venture that ended at Aspromonte? Recollecting his hesitation before assuming the leadership of the Sicilian expedition, it seemed the more unintelligible that he should now undertake an enterprise which, unless he could rely on the complicity of Government, had not a single possibility of success. His own old comrades were opposed to it, and it was notorious that Mazzini, to whom the counsels of despair were generally either rightly or wrongly attributed, had nothing to do with inspiring this attempt. In justice to Rattazzi, it must be allowed that, after the arrests at Sarnico, Garibaldi went into open opposition to the ministry, which he denounced as subservient to Napoleon. Nevertheless, with the remembrance of past circumstances in his mind, he may have felt convinced that the Prime Minister did not mean or that he would not dare to oppose him by force. One thing is certain; from beginning to end he never contemplated civil war. His disobedience to the King of Italy had only one purpose--to give him Rome. He was no more a rebel to Victor Emmanuel than when he marched through Sicily in 1860.
The earlier stages of the affair were not calculated to weaken a belief in the effective non-intervention of Government. Garibaldi went to Palermo, where he arrived in the evening of the 28th of June. The young Princes Umberto and Amedeo were on a visit to the Prefect, the Marquis Pallavicini, and happened to be that night at the opera. All at once they perceived the spectators leave the house in a body, and they were left alone; on asking the reason, they heard that Garibaldi had just landed--all were gone to greet him! Before the departure of the Princes next day, the chief and his future King had an affectionate meeting, while the population renewed the scenes of wild enthusiasm of two years ago. Some of Garibaldi's intimate friends assert that when he reached Palermo he had still no intention of taking up arms. He soon began, however, to speak in a warlike tone, and at a review of the National Guard in presence of the Prefect, the Syndic, and all the authorities, he told the 'People of the Vespers' that if another Vespers were wanted to do it, Napoleon III., head of the brigands, must be ejected from Rome. The epithet was not bestowed at random; Lord Palmerston confirmed it when he said from his place in the House of Commons: 'In Rome there is a French garrison; under its shelter there exists a committee of 200, whose practice is to organise a band of murderers, the scum and dross of every nation, and send them into the Neapolitan territory to commit every atrocity!' As a criticism the words are not less strong; but the public defiance of Napoleon, and the threat with which it was accompanied, dictated one plain duty to the Italian Government if they meant to keep the peace--the arrest of Garibaldi and his embarkation for Caprera.