Italy invaded Greece in October 1940, and deployed increasing numbers of BR.20s in attacks on Greece from bases in Italy and Albania in support of the Italian Army while it was being driven back into Albania. They were involved in heavy battles with the Greeks and British, often facing fierce RAF opposition, as happened on 27 February 1941, when four BR.20s were lost or heavily damaged. This force was redeployed against Yugoslavia during the more successful German and Italian invasion in April 1941, using a strong detachment (131 aircraft) in four groups.