 Complete the following phrase:  By mid-1941, RAAF Headquarters had decided to form training units in the southern and eastern states into semi-geographical, semi-functional groups separate to the area commands. This led to the establishment in August of No. 1 Training Group in Melbourne, covering Victoria, Tasmania and South Australia, and No. 2 Training Group in Sydney, covering New South Wales and Queensland. At the same time, Central Area was dissolved and its responsibilities divided between Southern and Northern Areas, and No. 2 Training Group. Western Area, uniquely among the area commands, retained responsibility for training, as well as operations and maintece, within its boundaries. In November 1941, all available aircraft from Nos. 14 and 25 Squadrons, as well as eight Avro Ansons from No. 4 Service Flying Training School, took part in the search for HMAS Sydney after it was 