 Complete the following phrase:  There were occasional engagements of high-flying single Junkers Ju 86 and Junkers Ju 88s or pairs of Bf 109s, probably on reconnaissance, but no major air raids  which was lucky, because RAF radar was unable to provide early warning and the gunners had to rely on their GL Mk II sets. 3 AAOR later 48 AAOR arrived in November to take over from 69th Rgts GOR, and 1981 Bechuana Co, APC, took over the smoke defences. All the AA gun and SL sites around the harbour were given a role in spotting mine-laying. After the disastrous 