[2] He endorsed Italy joining World War I on the side of France and the United Kingdom against Austria-Hungary and Germany.

[3] Federzoni supported Benito Mussolini when the latter issued his manifesto of 26 October 1922, announcing the march on Rome.

[5] At the historic meeting of the Grand Council of Fascism held on 25 July 1943 when the Fascist regime ended, he was among those who voted for Dino Grandi's Ordine del giorno which led to Mussolini's downfall, for which he was condemned in absentia at the Verona trial.

"Italy has awaited this since 1866 her truly national war, in order to feel unified at last, renewed by the unanimous action and identical sacrifice of all her sons.

Today, while Italy still wavers before the necessity imposed by history, the name of Garibaldi, resanctified by blood, rises again to warn her that she will not be able to defeat the revolution save by fighting and winning her national war."