 To handle other forms of intelligence , Blamey and MacArthur created the Allied Intelligence Bureau ( AIB ) . This included the Services Reconnaissance Department with its Z Special Unit that carried out special operations like Operation <unk> ; Secret Intelligence Australia ; the Coastwatchers , who watched for Japanese aircraft and ships from observation posts behind Japanese lines ; and the propaganda specialists of the Far Eastern Liaison Office ( <unk> ) . Two other important combined organisations , not part of AIB , were the Allied Translator and Interpreter Section ( ATIS ) , which translated Japanese documents , and the Allied Geographical Section , which prepared maps and charts , and drafted appreciations of the terrain . 
