Fourth Battle of the Isonzo

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Fourth Battle of the Isonzo
Part of the Italian Front
(World War I)
Italian Front 1915-1917.jpg
Eleven Battles of the Isonzo
June 1915 – September 1917
Date10 November – 2 December 1915
Soča river, western Slovenia
Result Austro-Hungarian tactical victory
 Kingdom of Italy  Austria-Hungary
Commanders and leaders
Kingdom of Italy Luigi Cadorna
Kingdom of Italy Emanuele Filiberto
Austria-Hungary Conrad von Hötzendorf
Austria-Hungary Svetozar Boroević
Austria-Hungary Archduke Eugen of Austria
370 battalions
1,374 guns
155 battalions
626 guns
Casualties and losses
49,500 (7,500 dead) 32,100 (4,000 dead)

The Fourth Battle of the Isonzo was fought between the armies of Kingdom of Italy and those of Austria-Hungary on the Italian Front in World War I, between November 10 and December 2, 1915.


In contrast to the previous three Battles of the Isonzo (June, July and October), this offensive lasted a short amount of time, and is sometimes considered a continuation of the previous offensive.

Most of the clash was concentrated in the direction of Gorizia and on the Kras Plateau, though the push was distributed on the whole Isonzo front. The Italian Second Army, aiming for the town of Gorizia, was able to capture the hilly area around Oslavia and San Floriano del Collio overlooking the Soča (Isonzo) and Gorizia itself. The Italian Third Army, covering the rest of the front up to the sea, launched a series of large and bloody attacks which brought no significant gain.

Mount Sei Busi, already the scene of bitter fighting, was attacked five times by the Italian forces, always in vain.

The intensity of the fighting increased until the end of November, when the bridgehead of Tolmin (Italian: Tolmino) was heavily bombed by both sides and the casualty ratio per day reached its apex. In the first fifteen days of December, however, the fighting was reduced to small scale skirmishes as opposed to the massive frontal assaults that characterized the previous phases of the battle.

An unsigned truce arrived together with the first great cold in the mountains of the Kras, and operations were ceased due to lack of supplies.

The Austro-Hungarian High Command, worried by the huge losses, requested assistance from the German Empire, which was not yet formally in the war against Italy. This would eventually lead to German intervention on the Italian front starting with the Eleventh Battle of the Isonzo.

See also[edit]

Further reading[edit]

  • Macdonald, John, and Željko Cimprič. Caporetto and the Isonzo Campaign: The Italian Front, 1915-1918. Barnsley, South Yorkshire: Pen & Sword Military, 2011. ISBN 9781848846715 OCLC 774957786
  • Schindler, John R. (2001). Isonzo: The Forgotten Sacrifice of the Great War. Praeger. ISBN 0275972046. OCLC 44681903.

External links[edit]

Coordinates: 45°58′9″N 13°36′40″E / 45.96917°N 13.61111°E / 45.96917; 13.61111