 Complete the following phrase:  A number of specialist units were also raised, including three Australian tunnelling companies. Arriving on the Western Front in May 1916 they undertook mining and counter-mining operations alongside British, Canadian and New Zealand companies, initially operating around Armentieres and at Fromelles. The following year they operated in the Ypres section. In November 1916, the 1st Australian Tunnelling Company took over from the Canadians around 