Until 1947 Mont Chaberton was in Italy, located in the municipality of Cesana Torinese.
In 1883 Italy joined the Triple Alliance and started strengthening its defences against France. Between 1898 and 1910 Italian troops built an artillery battery on the summit that pointed towards France, in particular at the town of Briançon, and the pass to Italy over the Col de Montgenèvre. A road was built to the summit from the village of Fénils in the Susa Valley by soldiers and engineers led by Major Engineer Luigi Pollari Maglietta. They flattened the summit by about 6 metres to provide a surface for the eight towers. Their height of 12 metres was designed to overcome the highest snowfall recorded.
Each emplacement was manned by seven men, who were protected by a relatively lightly armoured dome because the battery was thought to be out of reach of conventional artillery. Eight 149mm guns were mounted in the individual masonry towers.
See Wikipedia for more details...amazing the history!!!