In October the "Luftwaffe" reinforced "Fliegerkorps II", and a new round of heavy raids against the island began in an effort to restrict the RAF and RN's ability to interdict Axis convoys to Libya. The raiders employed new low-level tactics that lost heavily to the AA guns and RAF fighters. At this period, the 36 Bofors guns of 32nd LAA Rgt were deployed to defend Grand Harbour and the city of Valletta. By now there were increasing shortages of food and supplies on the island, but a supply convoy got through in November. With the recent Axis defeat at Alamein and the Allied North Africa landings the same month, the siege of Malta was ended. The only enemy air activity for the rest of the year was occasional high-flying reconnaissances and one raid on Luqa airfield in December. In January 1943 raids were reduced to occasional fighter sweeps, and in February no aircraft crossed the coastline at all.