The Defensive Organization of Corsica (Organisation Défensive de la Corse) was the French military organization that in 1940 was responsible for the defense of the French island of Corsica against a potential invasion by Fascist Italy. As part of the overall effort to fortify France's borders which included the Maginot Line, the fixed Corsican defenses were constructed in parallel with the Maginot Line, using the same organizational structure and similar designs, albeit scaled back in size, cost and fighting power. The Corsican defenses were designed to deter an Italian landing on the south end of Corsica, and to support artillery batteries capable of controlling the Strait of Bonifacio between Corsica and the Italian island of Sardinia, separated by only twelve kilometers. As World War II