[Desert Rat]

The black patch with red kangaroo is the official patch of OBGW1 and the DPDU patch with the blue 2 and red kangaroo is that of OBGW2. OBGW3 followed in 2007 with the Red kangaroo on a yellow/ gold Background. Overwatch Battle Group West (OBGW) was previously known as the Al Muthanna Task Group (AMTG) The OBGW forms Australias commitment to its Iraqi based 'Operation Catalyst' which commenced on 16 July 2003. 'Op Catalyst follows on from 'Operation Falconer'.
Working with the Interim Iraqi Government, the ADF continues to contribute to Multinational Force efforts to develop a secure and stable environment in Iraq and assist national recovery programs. Operation Catalyst currently comprises approximately 1400 Australian Defence Force personnel. 'Operation Catalyst' runs concurrently with 'Operation Slipper', Australia’s contribution to the War on Terror in Afghanistan.