The Royal Regiment of Australian Artillery, normally referred to as the Royal Australian Artillery (RAA), is a Regiment of the Australian Army descended from the original colonial artillery units prior to Australia's federation. Australia's first guns were landed from HMS Sirius and a small earthen redoubt built, near the present-day Macquarie Place, to command the approaches to Sydney Cove. The deployment of these guns represents the origins of artillery in Australia. These and subsequent defences, as well as field guns, were operated by marines and the soldiers of infantry regiments stationed in Australia. Unlike their British and Canadian equivalents, there are no regiments of horse artillery in the order of battle of the Royal Australian Artillery. The First World War saw the raising o