The flooding of the Piave prevented two of the three central armies from advancing simultaneously with the third; but the latter, under the command of Earl Cavan, after seizing Papadopoli Island farther downstream, won a foothold on the left bank of the river on 27 October. In the evening the Allies had covered so much ground that they were over-extended and vulnerable to a counter-attack. The Italian Tenth Army maintained its ground and had established a bridgehead 2.5 miles (4.0 km) deep and 5 miles (8.0 km) broad. The British captured 3,520 prisoners and 54 guns. Svetozar Boroević von Bojna, the Austro-Hungarian commander, ordered a counter-attack on the Italian bridgeheads on the same day, but his troops refused to obey orders, a problem confronting the Austrians from that time on, and the counter-attack failed. The first week of the battle involved heavy artillery dueling between the two sides, which were fairly evenly matched in firepower with the Italians possessing 7,700 guns to the Austro-Hungarians' 6,000 guns. From 24 October to 31 October alone, the Italian artillery fired 2,446,000 shells.
On 28 October, a group of Czechs declared Bohemia's independence from Austria-Hungary. The next day, another group purporting to represent the eventual South Slavs proclaimed their independence, and on 31 October, the Hungarian Parliament proclaimed their withdrawal from the union, officially dissolving the Austro-Hungarian state. On 28 October, under these new political and military conditions, the Austro-Hungarian high command ordered a general retreat. Vittorio Veneto was seized the next day by the Italian Eighth Army, which was already pushing on to the Tagliamento river. Trieste was taken by an amphibious expedition on 3 November. The Italian Eighth Army troops which had managed to cross the Piave were only able to communicate with the west bank by using swimmers. The swimmers were furnished by one of the most elite assault units in Italian history — the Arditi Corps, the Caimani di Piave ("Caimans of the Piave"). 82 were recruited by Captain Remo Pontecorvo Bacci after Caporetto. Carrying a resolza knife and two hand grenades, they were trained to remain in the powerful currents of the icy Piave for up to 16 hours; 50 died in the river during the campaign. The Italian Twelfth Army, commanded by French General Jean Graziani, continued to advance, supported on the right by the Eighth Army.
On 29 October the Italian Eighth Army pushed on towards Vittorio Veneto, which its advance guard of lancers and Bersaglieri cyclists entered on the morning of the 30th. The Italian Third Army forced a crossing of the Lower Piave while raids in the mountains disclosed that the Austrians were withdrawing there.y.
お礼
回答ありがとうございました。