There is reason to think that after Palestro, Gyulai, having at last realised what Napoleon was about, wished to evacuate Lombardy, but was prevented from doing so by strong protests sent by the Emperor Francis Joseph, who was at Verona. The Austrian army was in full retreat when it was pulled up near Magenta, with the object of checking the advance of the French, who had already begun to cross the Ticino by the bridges of San Martino and Buffalora, which the Austrians had tried to blow up, but had not succeeded from want of proper powder. In the great battle of the 4th of June, Austrians and French numbered respectively about 60,000 men; no Piedmontese were engaged till the evening, when a battalion of Bersaglieri arrived. The Imperial Guard, with which was Napoleon, had to bear the brunt of the fight for four hours, and ran a good chance of being annihilated; not a brilliant proof of French generalship, but happily the Austrians also committed grave mistakes. MacMahon's arrival at five in the afternoon prevented a catastrophe, and the fighting, which continued far into the night, was from this moment attended by results on the whole advantageous to the French. Not much more can be said. Magenta was very like a drawn battle. The Austrians are calculated to have lost 10,000 men, the French between 4,000 and 5,000. It was expected that the Austrians would renew the attack, but on the 5th, Gyulai ordered the retreat, which was the last order he had the opportunity of giving, as he was deprived of his command immediately after.