First Battle of the Isonzo
Battle in 1915 on the Italian Front during the First World War From Wikipedia, the free encyclopedia
The First Battle of the Isonzo was fought between the armies of Italy and Austria-Hungary on the northeastern Italian Front in World War I, between 23 June and 7 July 1915.
 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (February 2013) |
| First Battle of the Isonzo | |||||||
|---|---|---|---|---|---|---|---|
| Part of the Italian Front (World War I) | |||||||
 Eleven Battles of the Isonzo June 1915 – September 1917 | |||||||
| |||||||
| Belligerents | |||||||
 Kingdom of Italy |
 Austria-Hungary | ||||||
| Commanders and leaders | |||||||
|
Luigi Cadorna (Chief of Staff of the Italian Army) Pietro Frugoni (Commander of Second Army) Emanuele Filiberto di Savoia (Commander of Third Army) |
Archduke Friedrich (Supreme Commander of the Austro-Hungarian Army) Franz Conrad von Hötzendorf (Chief of the General Staff) Archduke Eugen of Austria-Teschen (Commander of Southwest Front) Svetozar Boroević von Bojna (Commander of Fifth Army) Géza Lukachich von Somorja (Commander of 5th Mountain Brigade) Guido Novak von Arienti (Commander of 1st Mountain Brigade) | ||||||
| Strength | |||||||
|
225,000: (18 divisions 252 battalions 111 cavalry squadrons 700 guns) |
115,000: (8 divisions 84 battalions 13 cavalry squadrons 356 guns) | ||||||
| Casualties and losses | |||||||
| 15,000[1] | 10,000[1] | ||||||
The aim of the Italian Army was to drive the Austrians away from its defensive positions along the Soča (Isonzo) river and surrounding mountains and hopefully capture the port of Trieste.
Although the Italians enjoyed a 2:1 numeric superiority, their offensive failed because the Italian commander, Luigi Cadorna, employed frontal assaults after impressive (but short) artillery barrages. The Austro-Hungarians had the advantage of fighting from uphill positions barricaded with barbed wire which were able to easily resist the Italian assault.[citation needed]
The Italians had some early successes. They partially took Krn (Monte Nero), took Kolovrat Plateau, and captured highlands around Bovec. However, they were unable to dislodge the Austro-Hungarian troops from the high ground between Tolmin and Soča River. The heaviest fighting occurred around Gorizia (Gorica). In addition to the natural defenses of the river and mountains, bastions were created at Oslavia (Oslavje) and Podgora. The fighting at Gorizia consisted of street-by-street urban combat interspersed with artillery fire. Italian troops, such as the Italian Re and Casale Brigades, were able to advance as far as the suburbs but could get no further and were driven back. They made small footholds at Sagrado and Redipuglia on the Karst Plateau southeast of Gorizia but were unable to do much else.
On the Austrian-Hungarian side two commanders distinguished themselves: Major General Géza Lukachich von Somorja, commander of the 5th Mountain Brigade, who retook Redipuglia, and Major General Novak von Arienti who retook Hill 383 (overlooking Plave) with his 1st Mountain Brigade.
Early in July the commander of the Austro-Hungarian Fifth Army, General Svetozar Boroević, received two reinforcement divisions, which put an end to the Italian efforts at breaking through the Austro-Hungarian lines.
The final Italian gains were minimal: in the northern sector, they conquered the heights over Bovec (Mount Kanin); in the southern sector, they conquered the westernmost ridges of the Karst Plateau near Fogliano Redipuglia and Monfalcone. The Battle was soon followed by the Second Battle of the Isonzo.
| Austria-Hungary | ||||
| 5th Army | ||||
| VII Corps | XVI Corps | XV Corps | ||
| 1st Infantry Division | 57th Infantry Division | 61st Infantry Division | 20th Infantry Division | 58th Infantry Division |
| 17th Infantry Division | 18th Infantry Division | 50th Infantry Division | ||
| 187th Infantry Brigade | 6th Mountain Brigade | 16th Mountain Brigade | 14th Mountain Brigade | 81st Honvéd Infantry Brigade |
| 39th Honvéd Infantry Brigade | 2nd Mountain Brigade | 12th Mountain Brigade | 5th Mountain Brigade | 4th Mountain Brigade |
| 10th Mountain Brigade | 1st Mountain Brigade | 13th Mountain Brigade | 7th Mountain Brigade | 15th Mountain Brigade |
| 8th Mountain Brigade | 3rd Mountain Brigade | |||
| Reserve | ||||
| 93rd Infantry Division | ||||
| Headquarters | ||||
| VII Corps in Kostanjevica | XVI Corps in Dornberg | XV Corps in Kneža |
| Italy | ||||
| 2nd Army | 3rd Army | |||
| VII Corps | X Corps | XI Corps | VI Corps | II Corps |
| IV Corps | ||||
| 13th Infantry Division | 14th Infantry Division | 20th Infantry Division | 19th Infantry Division | 21st Infantry Division |
| 12th Infantry Division | 11th Infantry Division | 4th Infantry Division | 3rd Infantry Division | 32nd Infantry Division |
| 7th Infantry Division | 8th Infantry Division | Bersaglieri Division | Alpini Group A and B | half 29th Infantry Division |
| Reserve | ||||
| XIV Corps | ||||
| half 29th Infantry Division | 22nd Infantry Division | 28th Infantry Division | 30th Infantry Division | 23rd Infantry Division |
| 27th Infantry Division | 33rd Infantry Division | 1st Cavalry Division | 2nd Cavalry Division | 3rd Cavalry Division |
| Commanders | ||||
| Pietro Frugoni | Emanuele Filiberto | |||
| Headquarters | ||||
| 2nd Army in Udine | 3rd Army in Cervignano |
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