While the Pope was still supposed to favour the war, Ferdinand of Naples did not dare to oppose the enthusiasm of his subjects, and the demand that a Neapolitan contingent should be sent to Lombardy. The first relay of troops actually started, but the generals had secret orders to take the longest route, and to lose as much time as possible.
Tuscany had a very small army, but such assistance as she could give was both promised and given. The fate of the Tuscan corps of 6000 men will be related hereafter. The Grand Duke Leopold identified himself with the Italian cause with more sincerity than was to be found at Rome or Naples; still, the material aid that he could offer counted as next to nothing.
There remained Piedmont and Charles Albert. Now was the time for the army which he had created (for Charles Felix left no army worthy of the name) to assert upon the Lombard fields the reason of its existence. War with Austria was declared on the 23rd of March. It was midnight; a vast crowd waited in silence in Piazza Castello. At last the windows of the palace were opened, a sudden flood of light from within illuminating the scene. Charles Albert stepped upon the balcony between his two sons. He was even paler than usual, but a smile such as no one had seen before was on his lips. He waved the long proscribed tricolor slowly over the heads of the people.
The King said in his proclamation that 'God had placed Italy in a position to provide for herself ('in grado di fare da sè'). Hence the often repeated phrase: 'L'Italia farà da sè.' He told the Lombard delegates, who met him at Pavia that he would not enter their capital, which had shown such signal valour, till after he had won a victory. He declared to all that his only aim was to complete the splendid work of liberation so happily begun; questions of government would be reserved for the conclusion of the war. Joy was the order of the day, but the fatal mistakes of the campaign had already commenced; there had been inexcusable delay in declaring war; if it was pardonable to wait for the Milanese initiative, it was as inexpedient as it seemed ungenerous to wait till the issue of the struggle at Milan was decided. Then, after the declaration of war, considering that the Sardinian Government must have seen its imminence for weeks, and indeed for months, there was more time lost than ought to have been the case in getting the troops under weigh. Still, at the opening of the campaign, two grand possibilities were left. The first was obviously to cut Radetsky off in his painful retreat, largely performed along country by-roads, as he had to avoid the principal cities which were already free. Had Charles Albert caught him up while he was far from the Quadrilateral, the decisive blow would have been struck, and the only man who could save Austria in Italy would have been taken prisoner. Radetsky chose the route of Lodi and the lower Brescian plains to Montechiaro, where the encampments were ready for the Austrian spring manoeuvres: from this point an easy march carried him under the walls of Verona. Here he met General d'Aspre, who had just arrived with the garrison of Padua. D'Aspre, by skill and resolution, had brought his men from Padua without losing one, having refused the Paduans arms for a national guard, though ordered from Milan to grant them. 'You come to tell me all is lost,' said the Field-Marshal when they met 'No,' rejoined the younger general, 'I come to tell you all is saved.'