An Admiral’s Compass is a reflection of works based on the experience of a naval aviator, a seaman, war veteran, military diplomat and two-star Admiral that is intended to share knowledge across the spectrum of personnel in the military in particular and those that are responsible for the management of the defence establishment. It is also intended to enlighten the larger members of security institutions and communities with information on leadership, military/naval strategy and maritime security as concepts. It will inspire the understanding of their various functions without the attendant clash of interest between maritime military institutions. It avoids the duplication of national assets in the pursuit of various mandates. Albeit, as a collective, under a central national coordinated effort, the aspirations for a better-secured nation will be achieved. An Admiral’s Compass is not only a storehouse of knowledge, but it is also easy to read, ensuring that the concepts/definitions are recent and relevant for long term purposes. While more emphasis was made on the maritime domain, it however ensures that it is adaptable for other military and services personnel in this era of Nigeria’s Joint/Combined Defence Doctrine.