On 26 July Marshal of Italy Pietro Badoglio, the new head of the government, reinstated Senise in his position of Chief of the Police; after the Armistice of Cassibile and the start of Operation Achse, while the king, Badoglio and most of the government and military leaders fled to Brindisi, Senise remained at his post in Rome. On 23 September 1943 he was arrested by SS Captain Erich Priebke in his office at the Viminale Palace, and was then transferred to Germany and imprisoned in the Dachau concentration camp. From there he was later transferred to Hirschegg, being liberated on 2 May 1945.