Each country needs military to defend its border, and army is one of the most important wing of that military. Let’s take a look at how the Australia army prepares for combat. In this video, you’ll see members of the Australian Army with Battle Group Waratah, 8th Brigade, perform synchronized combat arms training during exercise Southern Jackaroo at Shoalwater Bay, Queensland, Australia on May 23, 2016. A live fire exercise or LFX is any military exercise in which a realistic scenario for the use of specific equipment is demonstrated. In the popular lexicon this is applied primarily to tests of weapons or weapon systems that are associated with the various branches of a nation’s armed forces, although the term can be applied to the civilian arena as well.