Second Battle of the Piave River

The Second Battle of the Piave River, fought between 15 and 23 June 1918, was a decisive victory[4][5] for the Italian Army against the Austro-Hungarian Empire during World War I. Though the battle proved to be a decisive blow to the Austro-Hungarian Empire and by extension the Central Powers, its full significance was not initially appreciated in Italy. Yet Erich Ludendorff, on hearing the news, is reported to have said he 'had the sensation of defeat for the first time'.[6] It would later become clear that the battle was in fact the beginning of the end of the Austro-Hungarian Empire.[7]

Background

With the exit of Russia from the war in 1917, Austria-Hungary was now able to devote significant forces to the Italian Front and to receive reinforcements from their German allies. The Austro-Hungarian emperor Karl had reached an agreement with the Germans to undertake a new offensive against Italy, a move supported by both the chief of the general staff Arthur Arz von Straußenburg and the commander of the South Tyrolean Army Group Conrad von Hötzendorf.[8] In the autumn of 1917, the Germans and Austrians had defeated the Italians at the Battle of Caporetto. After Caporetto, the Italians fell back to the Piave and were reinforced by six French infantry divisions and five British infantry divisions as well as sizeable air contingents.

Prelude

Italy's defeat at Caporetto led to General Luigi Cadorna's dismissal and General Armando Diaz replaced him as Chief of staff of the Italian Army. Diaz set up a strong defense line along the Piave. Up until this point in the war, the Italian army had been fighting alone against the Central Powers; with the defeat at Caporetto, France and Britain sent small reinforcements on the Italian front. These, besides accounting for less than a tenth of the Italian forces in theater, had however to be redirected for the major part to the Western Front as soon as the German Spring Offensive began in March 1918.

Italian troops awaiting the Austrian attack

The Austro-Hungarian Army had also recently undergone a change in command, and the new Austrian Chief of Staff, Arthur Arz von Straußenburg, wished to finish off the Italians. After Caporetto, the Austro-Hungarian offensive has put many Italian cities, including Venice and Verona, under the threat of the Central Powers. Austria's army had since then longed to achieve these strategic prizes and force Italy into an armistice. Straußenburg's army group commanders, Conrad von Hötzendorf (the former Austrian Chief of Staff) and Svetozar Boroević von Bojna, both wished to make a decisive assault against the Italians, but could not agree about the location of the attack. Conrad wanted an attack from the South Tyrolean Alps[9] towards the Asiago Plateau and Vicenza. Boroević first favored a defensive action, but then when pressed preferred a frontal attack along the Piave River.[9] Straußenburg himself was in favour of an attack on the western part of the front (the "Giudicarie" sector) leading to Brescia. Conrad and Boroević had a dislike for each other, and Straußenburg and the emperor, unable to decide between these two strong personalities, divided the army equally between them, reserving only a small part of the forces for a diversionary action on the Giudicarie sector. The preparation of the offensive began in February 1918, after a meeting in Bolzano between the Austrian and German high commands. It was strongly recommended by the Germans, as Ludendorff hoped that it could force the increasing American forces in France to be diverted to the Italian front, so Straußenburg modeled the attack after Erich Ludendorff's offensive on the Western Front.

The Austro-Hungarians, differently from their previous success at Caporetto and from the subsequent attempts to breakthrough on Monte Grappa, did not prepare the attack as a pinpoint one, but as an all-out frontal attack, employing the entire residual strength of their army all along the front. The Austro-Hungarian formations were trained to employ the tactics developed by the Germans on the Western Front for Operation Michael, as Austrian officers returning from the Eastern Front were extensively trained alongside their German counterparts. There were also innovations on the Italian side. Analyzing the defeat of Caporetto, the staff of Armando Diaz concluded that the main tactical causes of it were the lack of mobility of Italian units, caught in a too rigid defensive scheme, the too centralized command and control system, and the lack of depth of Italian defences, where too many soldiers were simply stuck on the frontline. The new schemes prepared for the battle led to the abolition of the continuous entrenchment and in the development of a highly mobile defence system, in which even the smaller units were allowed to freely move between previously recognized strongpoints, independently decide to retreat or counterattack, or directly call the support of the artillery. Moreover, 13 divisions, equipped with 6000 trucks, were organized in a central reserve, ready to be sent where it was needed.

Battle

Italian Marines of the San Marco Brigade landing from barges to take up positions on the Piave Front

General Diaz learned the exact timing of the Austrian attack: 3:00 a.m. on 15 June, so at 2:30 a.m., the Italian artillery opened fire all along their front on the crowded enemy trenches, inflicting heavy casualties. In some sectors the artillery barrage had the effect of delaying or stopping the attack, as Austrian soldiers began to retreat to their defensive positions, believing they had to face an unexpected Italian attack, but on the greater part of the front the Austrians still attacked. Boroević launched the first assault, moving South along the Adriatic coast and in the middle course of the Piave River. The Austrians were able to cross the Piave and gained a bridgehead 15 miles (24 km) wide and 5 miles (8.0 km) deep[9] in the face of Italian heavy resistance, before Boroević was finally stopped and forced to order a retreat. On the subsequent days Boroević renewed the assault, but the artillery barrage destroyed many of the river's bridges and the Austrian formations that crossed the river were unable to receive reinforcement and supplies. To make matters worse, the swollen Piave isolated a great number of units on the west bank of the river, which made them an easy target for the Italian fire. An estimated 20,000 Austro-Hungarian soldiers drowned while trying to reach the east bank.[10] On 19 June, Diaz counterattacked and hit Boroević in the flank, inflicting heavy casualties.

In the meantime Conrad attacked along the Italian lines west of Boroević on the Asiago Plateau (on 15 June), with the objective of capturing Vicenza. His forces gained some ground, but came upon stiff resistance by Italian units;[9] 40,000 casualties were added to the Austrian total. In the aftermath, Boroević was particularly critical about the behavior of Conrad who, after the complete failure of the first attack, preferred to continue the assaults in the subsequent days but with diminished strength, rather than send reinforcements to the Piave sector.

Lacking supplies and facing attacks by armored units, the Austro-Hungarians were ordered to retreat by Emperor Karl, who had taken personal command, on 20 June.[9] By 23 June, the Italians recaptured all territory on the southern bank of the Piave and the battle was over.

Aftermath

Italian troops at the end of the battle

After the Austrian retreat Diaz was pressed by the allies, particularly by General Ferdinand Foch, to press on and try an assault to break the Austrian defences and gain a decisive victory over the Empire. However, the Italian General recognized that the same tactic, that proved so effective on defence, prevented an immediate offence, as the Italian formations at that time were too scattered and mixed up to be effectively coordinated in a decisive assault. Moreover, once the Italian Army crossed the river, they would have to face the same logistic problems as the Austrians. For these reasons, in the subsequent days, only limited actions were fought to gain better start positions for the decisive assault.

On the other side, the Battle of the Piave River was the last great military offensive of Austria-Hungary. A clear failure, the operation struck a major blow to the army's morale and cohesion and had political repercussions throughout war-weary Austria-Hungary.[11] The battle signaled the end of its army as a fighting force and the beginning of the collapse of the Empire, which was finished off at the Battle of Vittorio Veneto four months later.[12][13]

Order of Battle

General Armando Diaz

Italy (Armando Diaz) (west to east)

Austria-Hungary (Arthur Arz von Straußenburg) (west to east)

See also

Citations

  1. 1 2 Clodfelter 2017, p. 419.
  2. ↑ Tucker, Spencer. "World War I: Encyclopedia, Volume 1". Page 919.
  3. ↑ Tucker, Spencer. "World War I: Encyclopedia, Volume 1". Page 919.
  4. ↑ Pope, Steven; Wheat, Elizabeth-Anne (2007). Dictionary of the First World War. Pen and Sword. p. 245. ISBN 0850529794.
  5. ↑ "First World War.com - Primary Documents - G.M. Trevelyan on the Battle of the Piave River, 15-22 June 1918". www.firstworldwar.com. Retrieved 2017-07-04.
  6. ↑ Seton-Watson, Christopher: Italy from Liberalism to Fascism, 1870–1925. Taylor & Francis, 1981, p 500. ISBN 0-416-18940-7
  7. ↑ Fuller, John Frederick Charles: Decisive battles: Their influence upon history and civilisation. C. Scribner's sons, 1940, p 912
  8. ↑ Rothenburg, G. The Army of Francis Joseph. West Lafayette: Purdue University Press, 1976. p 212.
  9. 1 2 3 4 5 Rothenburg 1976, p. 213
  10. ↑ Halsey, Francis Whiting: The Literary Digest History of the World War: Compiled from Original and Contemporary Sources. Funk & Wagnalls Company, 1919, V.9, p 143
  11. ↑ Rothenburg 1976, p 213–214
  12. ↑ "The comprehensive failure of the offensive served merely to hasten the disintegration of the Austro-Hungarian army. Its destruction was completed by the Italians at the Battle of Vittorio Veneto in the autumn. The Battle of the Piave River, 1918
  13. ↑ Simonds, Frank Herbert: History of the World War, Volume 5. Doubleday, 1920, p 359

References

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