Complete the following sentence: After the war, Mackay studied physics at the University of Cambridge under Ernest Rutherford before returning to Australia and his old job as a lecturer at the University of Sydney.<unk> After the war, Mackay studied physics at the University of Cambridge under Ernest Rutherford before returning to Australia and his old job as a lecturer at the University of Sydney. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️ Any doubts about his ability soon disappeared with the commitment of the division to the Western Desert Campaign.<unk> Any doubts about his ability soon disappeared with the commitment of the division to the Western Desert Campaign.<unk> <unk> <unk> <unk> <unk>
Battle of Bardia in January 1941, the 6th Division captured the fortified town along with 36,000 Italian prisoners. In the Battle of Greece, he became the only Australian general to face the "Waffen-SS" in battle. <unk> <unk> <unk> <unk> ️<unk>️<unk>️<unk>️<unk> 6 April 1942, he assumed command of the Second Army. During 1943 he twice commanded New Guinea Force in the fighting in the New Guinea campaign.<unk> During 1943 he twice commanded New Guinea Force in the fighting in the New Guinea campaign. •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••