 Complete the following phrase:  The Territorial Army underwent rapid expansion during the period of international tension preceding World War II, and among the new units created was 15th Isle of Man Light Anti-Aircraft Regiment, Royal Artillery, formed at Douglas on 1 July 1938. During the war its batteries served in the Western Desert campaign, the East African Campaign and the defence of Crete where most of a battery was captured. Later it became the air defence regiment for the famous 7th Armoured Division the Desert Rats fighting its way across North Africa to 