Party membership cardAfter the entry of Italy into the Second World War on 10 June 1940, Borg Pisani renounced his British citizenship, returning his British passport through the American embassy (which represented British interests in Rome). Yet he never formally requested nor obtained Italian citizenship, despite later serving in the Italian army. He also wrote a letter to Mussolini to volunteer for service, but was refused by the
Italian Army due to his strong
myopia. With the Blackshirts he participated in the Italian occupation of
Kefallinia in
Greece, where he was injured. Together with other Maltese irredentists he then attended the military school of
Messina. On 18 May 1942, Borg Pisani volunteered for an
espionage mission to Malta, to check British defences and help prepare for the planned Axis invasion of the island (
Operation Herkules). He disembarked at the
Dingli Cliffs in Ras id-Dawwara and transferred all his rations to a cave that he knew well from his youth. Unusually inclement weather and a rough sea, however, washed all his possessions away within 48 hours, and he proved unable to climb the cliffs. He was forced to wave down a local boat. Upon rescue by a British
patrol boat, he was brought to the naval hospital
RNH Mtarfa. There, Borg Pisani was recognized by one of his childhood friends, Cpt. Tom Warrington (1912-1994), who denounced him. British Intelligence kept him under arrest in a house in
Sliema till August. He was then transferred to
Corradino prison, accused of
treason. On 12 November 1942, he stood trial under closed doors in front of three judges, headed by
Chief Justice of Malta Sir
George Borg, and defended by two lawyers. Borg Pisani's brother, Paulo Borg who was a priest, tried in vain to save Carmelo's life by submitting a petition to the Governor of Malta,
John Vereker, 6th Viscount Gort and beseeched him to use the prerogative of mercy, and to reverse the sentence to long-term, or life imprisonment instead of execution. The petition for clemency was denied with a
note stating that the Governor "sees no reason to interfere with the course of the law". about Borg Pisani's executionHis execution by
hanging took place at 7:30am on Saturday, 28 November. Frank Leighton considered him "a gullible victim of fascist Italy's propaganda". ==Legacy==