Fulvio Martini was born in Trieste which a few years earlier had been transferred from Austro-Hungary to Italy in the context of the wartime treaty commitments whereby the British and their allies had persuaded Italy to join in the war on the allied side. During the Second World War he enlisted in the Italian navy. Martini's first assignment was as a junior officer on the aging battleshipCaio Duilio. He continued his naval career after the war ended, serving between 1972 and 1973 as ship's captain on the battle cruiserVittorio Veneto, at which time the vessel was the flagship of the Italian navy. His long career in military intelligence began in 1956. He served till 1962 in the naval branch of the military intelligence and status information service. Stationed in the Bosphorus area to monitor movements of the Soviet merchant fleet to and from the Mediterranean, he was involved in providing the Americans with photographs missile parts being transported to Cuba. In the hands of the Americans these images played an important part in demolishing General Secretary Kruschev's assertions of the Soviet Union's "innocence" during the Cuban Missile Crisis. After that he headed up "Department S" of the Military Intelligence Service. Between 1965 and 1968 he was based in Belgrade as naval attaché to Yugoslavia. Then, till 1977 he continued to work in the :it:Servizio Informazioni Difesa|"SID" military intelligence service, living through a period of reform for the Italian intelligence services. Shortly after the launch in 1977 of the SISMI and SISDE Martini was given another naval command at sea. The P2 scandal rose up the political agenda at the end of the 1970s. Slow but inordinate investigation indicated that top SISMI personnel, who had made their careers in its predecessor organisation, the :it:Servizio Informazioni Difesa|SED had been members of the discredited lodge. Martini was an experienced intelligence officer untainted by the affair and took charge of the SISMI, purging the organisation of residual fascist elements and others involved in the P2 conspiracies. His scope for manouvre was limited by the need to sustain existing structures in response to the country's cold war obligations, but he nevertheless succeeded in transforming the SISMI into an efficient and modern intelligence service, and to lift from it the shadow of a "secret police" guiding spirit.