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The Italian Fourth Army was an Italian army formation, in World War I, facing Austro-Hungarian and German forces, and in World War II, occupying Southern France.

World War I

During World War I, the Fourth Army was positioned between the Asiago plateau and the Carnic Alps. During the Caporetto disaster, it had to withdraw to the Mount Grappa massif, where it won the defensive battle of Mount Grappa. It then participated in the successful Battle of the Piave River (June 1918) and Battle of Vittorio Veneto (October–November 1918).

Its commanders were :

World War II

At the beginning of World War II, the Italian Fourth Army was one of three armies that made up Army Group West commanded by Prince General Umberto di Savoia. Together with the Italian First Army and the Italian Seventh Army (kept in reserve), the Fourth Army attacked French forces during the Italian invasion of France.
After the Franco-Italian Armistice, the Fourth Army occupied a small zone of France, which was enlarged in November 1942, when during Case Anton the Italians occupied all of southeastern France and Corsica.
After the Armistice of Cassibile in September 1943, the Fourth Army surrendered to the Germans.

Its commanders were :[1]

  • Camillo Grossi (1938 – 1940)
  • Mario Vercellino (1940 – 1940)
  • Alfredo Guzzoni (1940 – 1940)
  • Mario Caracciolo di Feroleto (1940 – 1941)
  • Mario Vercellino (1941 – 1943)


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