The Australian Military Court (AMC) was a military service tribunal established in 2007 with the primary aim of maintaining military justice within the Australian Defence Force. In August 2009, the High Court of Australia ruled that the AMC was unconstitutional according to the Constitution of Australia, putting the 171 cases the court had tried in doubt. In May 2010, the Australian Government announced a new Military Court of Australia (MCA) to replace the provisional system established after the dissolution of the AMC and to provide an appropriate military judiciary for the Australian Defence Force.