Hi Tom,
A wee bit about the Italian effort in the BOB. In July 1940, Mussolini offered to take part in the air battle, but was ultimately declined by Hitler.A change of heart ensued, and in September , the Corpo Aero Italiano were built up in Belgium under Luftflotte II. I beleive the total force was 50 Fiat CR-42,48 Fiat G-50 and 80 Fiat BR-20 bombers.
Several small scale incursions were made in October, but only one real attack on the 11th November, in which 3 fighters and 6 bombers of the Italians were brought down.
Some good info can be read at the following link to the RAF Museums CR-42, which crash landed in Suffolk on November 11th 1940. Hope this is of some help and interest.
Willie
http://www.rafmuseum.org.uk/london/collections/aircraft/aircraft_histories/78-AF-952%20%20%20Fiat%20CR42%20Falco.pdfPic of the aircraft here
http://www.rafmuseum.org.uk/london/collections/aircraft/fiat-cr42-falco.cfm