Italy
Italy's Aeronautica Militare (AM) has operated a public UFO reporting channel since 1978, when Stato Maggiore della Difesa codified the procedure for civilian and military sightings to be filed at the Reparto Generale Sicurezza (RGS). Italy is unusual in Europe for keeping a continuously-staffed military UFO desk rather than transferring the function to a civilian aviation body.
Reporting framework
Reports flow from civilian witnesses or air-traffic-control units to the local Reparto Generale Sicurezza, which forwards them to Stato Maggiore Aeronautica. The AM periodically declassifies aggregate data under the 2013 FOIA statute (D.lgs. 33/2013).
Notable cases in the AM corpus
1973 Caselle — Turin Caselle airport ATC + multiple commercial pilot reports; sustained radar return.
1978–1979 wave — large multi-witness wave across northern Italy; AM publishes annual aggregate counts.
2012–2014 Sicilia / Sardegna cluster — formally investigated; majority resolved as conventional traffic; ~12% unresolved.
Verbatim — Italian Air Force statement, 2014
"Lo Stato Maggiore Aeronautica conferma di ricevere e analizzare le segnalazioni di avvistamenti di OVNI da parte di cittadini, piloti e personale di torre di controllo. Le indagini sono condotte in coordinamento con ENAV, l'Aeronautica Civile e, ove appropriato, con i Reparti Generali dell'Aeronautica."