from the Jul 21 announcement (bold/underlined for reference):

Australian Army Deployment

19 Jul, 2021

Sydney, Australia - 19 July 2021 - DroneShield Ltd (ASXRO) (“DroneShield" or the “Company”) is pleased to advise that it has sold a quantity of its RfOne MKII long-range sensors to the Australian Army. The capability is being delivered immediately to allow the Australian Army to assess its future counter-drone requirements and options.

The deployment of these long-range sensors will highlight the flexibility, resilience, and capabilities of DroneShield equipment in a dynamic field environment, while also assisting the Australian Army in establishing its counter drone requirements and future capability options. The sale was structured as a one-off sale to the Australian Army, and, similar to the standard purchases from DroneShield’s other defence and law enforcement customers, comprises a small purchase of equipment. While the size of the sale is financially immaterial, it is considered to be material from a growth perspective as it is expected to lead to larger procurements, once the equipment from the earlier purchase has been fielded for a period of time.

The two points above that are underlined, show that the sale was conducted as a one-off sale for the purpose of test and assessment prior to any actual acceptance or rollout of the platform for wider use in Defence. It's not an accurate example of how the platform would be managed throughout its life-of-use once accepted; It's simply a one-off purchase for trials.

I haven't seen any other articles relating to additional purchases of the platform by "Australian Army" (this point I would contest as well; it would be CASG not army that procures the platform).