Field Manual FM 3-16 The Army in Multinational Operations, ensures consideration by Army elements of a joint force and addresses the Army's roles and functions in a multinational operation. While North Atlantic Treaty Organization (NATO) and the American, British, Canadian, Australian, and New Zealand (ABCA) Armies' Program have achieved some levels of standardization in certain areas, no comprehensive common doctrine exists between the armies. This manual does not fill this gap. It will help the multinational commander understand and develop solutions to create an effective fighting force. The principal audience for FM 3-16 is all members of the profession of arms. Commanders and staffs of Army headquarters serving as joint task force or multinational headquarters should also refer to applicable joint or multinational doctrine concerning the range of military operations and joint or multinational forces.