Marazzani led the division in the invasion of Yugoslavia in April 1941 and then on the Eastern Front from July 1941 to November 1942, when he was replaced by General Ettore De Blasio; on 28 April 1942 he was promoted to major general for war merit, and in November he was awarded the Military Order of Savoy. After returning to Italy he was attached to the Fourth Army from November 1942 to April 1943 and to the Ministry of War from April to June, after which he was appointed inspector of cavalry troops. After the armistice of Cassibile in September 1943 and the German occupation of Italy he went into hiding until April 1945; after the liberation he resumed service and was assigned to the Ministry of War. In 1947 he became commander of the 3rd Territorial Defence Command and the Milan Army Corps, and in May 1948 he was appointed first aide-de-camp to the President of the Republic Luigi Einaudi, being promoted to Lieutenant General on the following August. In 1955 he was transferred to the Army reserve, receiving a letter of thanks from the President of the Republic for his seven years as a military adviser; he was also awarded the Order of Merit of the Italian Republic. He died in Novara on January 15, 1969.http://www.tempiocavalleriaitaliana.it/public/biblioteca/pubblicazioni/Mario%20Marazzani%20-%20La%20Cavalleria%20italiana%20durante%20la%20campagna%20di%20Russia%20-%20Luglio%20'41%20a%20Agosto%20'42.pdf https://www.anbprovmilano.it/eventi/190519/Cronistoria%20Orazio%20D%20Angelo.pdf
