The Battle of Caporetto (also known as the Twelfth Battle of the Isonzo, the Battle of Kobarid or the Battle of Karfreit) was a battle on the Italian front of World War I.
The battle was fought between the Kingdom of Italy and the Central Powers and took place from 24 October to 19 November 1917, near the town of Kobarid (now in north-western Slovenia, then part of the Austrian Littoral). The battle was named after the Italian name of the town (also known as Karfreit in German).
Austro-Hungarian forces, reinforced by German units, were able to break into the Italian front line and rout the Italian forces opposing them. The battle was a demonstration of the effectiveness of the use of stormtroopers and the infiltration tactics developed in part by Oskar von Hutier. The use of poison gas by the Germans also played a key role in the collapse of the Italian Second Army.
The rest of the Italian Army retreated to the Piave River, its effective strength declined from 1,800,000 troops down to 1,000,000 and the government of Paolo Boselli collapsed.
Battle of Caporetto order of battle
Throughout the spring and summer of 1917, the Italians had launched numerous offensives on the Austro-Hungarian Lines in the Isonzo Sector, with the 11th Battle of the Isonzo being the most successful in pushing back the Austro-Hungarians. After the Italian success in the 11th Battle of the Isonzo, Emperor Karl knew a breakthrough was going to happen at any moment, as both the Austro-Hungarians and Italians were exhausted, and running out of men to sustain the war. So, he wrote to Kaiser Wilhelm II and requested that German forces be deployed to Italy.
In August 1917 Paul von Hindenburg and Arthur Arz von Straußenburg decided to send troops from the Eastern Front to the Isonzo Sector. Erich Ludendorff was opposed to this but was overruled. Later, in September three experts from the Imperial General Staff, led by the chemist Otto Hahn, went to the Isonzo front to find a site suitable for a gas attack.