War of the Mountains 1915–1918

Italian Front

From left to right: Ortles, autumn 1917; Fort Verena, June 1915; Mount Paterno, 1915; Carso, 1917; Toblach, 1915.

Date	23 May 1915 – 6 November 1918 (3 years, 5 months and 2 weeks)
Location	Eastern Alps and Venetian Plain
Result	Decisive Entente victory Armistice of Villa Giusti Collapse of the Austro-Hungarian Empire Italian Regency of Carnaro → Free State of Fiume Treaty of Saint-Germain-en-Laye Treaty of Trianon

Belligerents

Kingdom of Italy
1915 – up to 58 divisions
British Empire
1917 – 3 divisions
French Third Republic
1918 – 2 divisions
Czechoslovak Legion
1918 – 5 regiments
Romanian Legion
1918 – 3 regiments

United States
1918 – 1 regiment

Austria-Hungary
1915 – up to 61 divisions

German Empire
1917 – 5 divisions

Commanders and leaders

Casualties and losses

2,150,000:
651,000 dead
953,886 wounded
530,000 missing or captured
6,700:
1,057 killed
4,971 wounded
670 missing/captured
2,872:
480 killed (700 died indirectly)
2,302 wounded
unknown captured

Total:
~2,160,000 casualties

2,330,000:
400,000 dead
1,210,000+ wounded
477,024 captured
176,000 missing
?

Total:
1,420,451+-2,430,000+ casualties

589,000 Italian civilians died of war-related causes

Kingdom of Italy
1915 – up to 58 divisions
British Empire
1917 – 3 divisions
French Third Republic
1918 – 2 divisions
Czechoslovak Legion
1918 – 5 regiments
Romanian Legion
1918 – 3 regiments

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Wikipedia