Understanding Military Structure Many records in the Memorial's collection contain reference to military units and/or?formations. Having some basic knowledge of military structure can help you understand the collection better and help with your research. The following guides provide an easy-to-understand overview of military structure that will help to provide context when you come across references to military structure in the collection. Rank The most basic organisation in the armed forces is that of rank. This guide will help you understand the hierarchy of rank and the relationship of different ranks across the services. Learn more Army The Australian Army is comprised of many different 'corps', each with a specific role. This guide will help you understand the where each corps fits into the organisation. Learn more Royal Australian Navy The Royal Australian Navy has a rich history dating back to the late 1850's. Learn more Royal Australian Air Force From the First World War through to today, Australian men and women have served in the skies above conflict zones around the world. Learn more Last updated: 3 August 2021