The BR.20s of the "Corpo Aereo Italiano" nevertheless bombed both Ipswich and Harwich on the nights of 5, 17, 20, 29 November, three times in December and twice at the beginning of January, with no losses suffered. On 10 January 1941, the 43° "Stormo" flew back to Italy, followed by the 13° before the end of the month as the Axis bombing campaign dwindled. During 12 days of bombing missions, the “Cicognas” dropped 54,320 kg (119,755 lbs); three aircraft were lost to enemy fire, 17 more for other reasons and 15 airmen were killed. Almost 200 modern aircraft were engaged in the campaign, which involved an opportunity cost in the form of weakening the "Regia Aeronautica"s presence in the Mediterranean.