An army , in the broadest sense, is the land-based armed forces of a nation. It may also include other branches of the military such as an air force.... , marine, or air force
Air force
An air force, also known in some countries as an air army or historically an army air corps , is in the broadest sense, the national armed force or armed service that primarily conducts aerial warfare.... commissioned officer senior in rank to a company officer
Company-grade officer
In United States Armed Forces usage, a company-grade officer is a Second Lieutenant, First Lieutenant, or Captain .In the United States Army, company-grade officers are typically assigned to a company as a platoon leader or executive officer or as a Commanding officer They may also be assigned as staff officers.... but junior to a general officer; in some navies
Navy
A navy is the branch of a nation's military forces principally designated for naval warfare and amphibious warfare; namely, lake- or ocean-borne combat operations and related functions.... , it is an officer who is a Lieutenant Commander
Lieutenant Commander
Lieutenant Commander is a commissioned officer military rank in many navy superior to a Lieutenant and subordinate to a Commander. The corresponding rank in most army, and air forces is Major, and in the Royal Air Force and other Commonwealth of Nations air forces is Squadron Leader also.... , Commander
Commander
Commander is a military rank which is also sometimes used as a military title depending on the individual customs of a given military service. Commander is also used as a rank or title in some organizations outside of the military, particularly in police and law enforcement.... , or Captain
Captain (naval)
Captain is the name most often given in English-speaking navy to the rank corresponding to command of the largest ships. The Naval officer ranks#NATO Rank Codes is OF-5, equivalent to an army full colonel.... .
A regiment is a military unit, composed of variable numbers of battalions, commanded by a Colonel. Depending on the nation, military branch, mission, and organization, a modern regiment resembles a brigade, in that both range in size from a few hundred to 5,000 soldiers .... or battalion
Battalion
A battalion is a military unit of around 500-1500 men usually consisting of between two and seven company and typically commanded by a Lieutenant Colonel.... 's field officers made up its command element.
The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U... armed forces is typically a major
Major
In many European languages, the term Major refers to a military rank, denoting seniority at one of usually various levels of rank, for example: "Sergeant-Major" denoting the most senior ranking sergeant of a large military unit; "Captain-Major", denoting a mid-level command status Officer ... , lieutenant colonel
Lieutenant Colonel
Lieutenant colonel is a rank of commissioned officer in the army and most Marine and air forces of the world, typically ranking above a major and below a colonel.... , or a colonel
Colonel
Colonel is a military rank of a commissioned officer, with corresponding ranks existing in almost every country in the world. It is also used in some police forces and other paramilitary rank structures.... :
The British Army is the Army branch of the British Armed Forces. It came into being with the unification of the Kingdoms of Kingdom of England and Kingdom of Scotland into the Kingdom of Great Britain in 1707.... (in which these officers are called officers of field rank, not field grade), and some others in the Commonwealth
Commonwealth of Nations
The Commonwealth of Nations, also known as the Commonwealth or the British Commonwealth, is an intergovernmental organization of fifty-three independent member states.... (including the Australian Army
Australian Army
The Australian Army is Australia's military land force. It is part of the Australian Defence Force along with the Royal Australian Navy and the Royal Australian Air Force.... and New Zealand Army
New Zealand Army
New Zealand Army , is the land armed force of the Military of New Zealand and comprises around 4,500 regular personnel and 2,500 non-regulars and civilians.... ), also include the brigadier
Brigadier
Brigadier is a military Military rank, the meaning of which has a considerable variation.... in this category: the equivalent in other armies is a general officer (the brigadier general
Brigadier General
Brigadier General is the lowest ranking General Officer in some countries, usually sitting between the ranks of Colonel and Major General.The rank can be traced back to the militaries of Europe where a brigadier general, or simply a brigadier, would command a brigade in the field.... ).
The Canadian Forces , officially the Canadian Armed Forces , are the unified armed forces of Canada, as constituted by the National Defence Act, which states: "The Canadian Forces are the armed forces of Her Majesty raised by Canada and consist of one Service called the Canadian Armed Forces." This singular institution consists of thre... , the equivalent of field officers are senior officers ; they include the army and air force ranks of Major, Lieutenant-Colonel, and Colonel, and the naval ranks of Commander
Commander
Commander is a military rank which is also sometimes used as a military title depending on the individual customs of a given military service. Commander is also used as a rank or title in some organizations outside of the military, particularly in police and law enforcement.... , and Captain
Captain (naval)
Captain is the name most often given in English-speaking navy to the rank corresponding to command of the largest ships. The Naval officer ranks#NATO Rank Codes is OF-5, equivalent to an army full colonel.... .
In the German Forces, Field Officers (ranging from Major to Colonel in the Army and Luftwaffe, from Lieutenant Commander to Captain in the Navy) are known as Staff Officers (Stabsoffiziere).
