During the early years of World War II, he took part in some actions against France, and was then named commander of the school of cavalry in Pinerolo.

On 15 June 1945 he was awarded the Patriot's Certificate, a decoration reserved to those who had contributed to the Italian resistance movement.

He was also awarded the Legion of Merit – Degree of Commander for service between September 1943 to May 1945 (General Order 124, 27 December 1945).

In 1961 he returned to be a member of the Italian Chamber of Deputies Defence Commission and remained in charge until the legislature's term in 1963.

[5] In 1964, along with Randolfo Pacciardi, Tomaso Smith, Alfredo Morea, Mario Vinciguerra, Ivan Matteo Lombardo, the journalist Giano Accame (1928–2009), Salvatore Sanfilippo [it], Alberto Rossi Longhi, Giuseppe Mancinelli and Giuseppe Caronia, Cadorna was the first to sign the manifesto of the Democratic Union of the New Republic, a complex plan which proposed the introduction of Presidentialism within the constitutional parliamentary form of the State.