you need to look at the politics first and the trade unions, then the regional opposition to build up some evidence that it did divide, then maybe look at which areas of society were affected, women, workers, then look at the post war impact and see how the Australians recovered from the war and move onto the lasting effects conscription had leading into World War 2. The weight of your essay should be on the opposition to the attempts to introduce it, which is where the issues of division first arose. I would also touch on the aboriginal aspect if you can find anything .