A non-commissioned officer (NCO) is a military officer who does not hold a commission. Non-commissioned officers usually earn their position of authority by promotion through the enlisted ranks. In contrast, commissioned officers usually enter directly from a military academy, officer training corps (OTC) or reserve officer training corps (ROTC), or officer candidate school (OCS) or officer training school (OTS), after receiving a post-secondary degree.
Brigadier general or brigade general is a military rank used in many countries. The rank is usually above a colonel, and below a major general or divisional general. When appointed to a field command, a brigadier general is typically in command of a brigade consisting of around 4,000 troops.
Sergeant major is a senior non-commissioned rank or appointment in many militaries around the world.
In the United States Navy, officers have various ranks. Equivalency between services is by pay grade. United States Navy commissioned officer ranks have two distinct sets of rank insignia: On dress uniform a series of stripes similar to Commonwealth naval ranks are worn; on service khaki, working uniforms, and special uniform situations, the rank insignia are identical to the equivalent rank in the US Marine Corps.
Officer candidate or officer aspirant (OA) is a rank in some militaries of the world that is an appointed position while a person is in training to become an officer. More often than not, an officer candidate was a civilian who applied to join the military directly as an officer. Officer candidates are, therefore, not considered of the same status as enlisted personnel.
The ranks of the Cuban Revolutionary Armed Forces are the military insignia used by the Cuban military.
The military ranks of Finland are the military insignia used by the Finnish Defence Forces. The ranks incorporate features from the Swedish, German, and Russian armed forces. In addition, the system has some typically Finnish characteristics that are mostly due to the personnel structure of the Finnish Defence Forces. The ranks have official names in Finnish and Swedish languages and official English translations. The Swedish forms are used in all Swedish-language communications in Finland, e.g. in Swedish-speaking units of the Finnish Defence Force. The system of ranks in the Swedish Armed Forces is slightly different.
The ranks in the Israel Defense Forces (IDF) reflect an individual's level in the military.
Specialist is a military rank in some countries' armed forces. Two branches of the United States Armed Forces use the rank. It is one of the four junior enlisted ranks in the United States Army, above private (PVT), private (PV2), and private first class and is equivalent in pay grade to corporal; in the United States Space Force, four grades of specialist comprise the four junior enlisted ranks below the rank of sergeant.
The Carabineros de Chile are the Chilean national law enforcement gendarmerie, who have jurisdiction over the entire national territory of the Republic of Chile. Created in 1927, their mission is to maintain order and enforce the laws of Chile. They reported to the Ministry of National Defense through the Undersecretary of Carabineros until 2011 when the Ministry of the Interior and Public Security gained full control over them. They are in practice separated fully from the three other military branches by department but still are considered part of the armed forces. Chile also has an investigative police force, the Investigations Police of Chile, also under the Interior and Public Security Ministry; a Maritime Police also exists for patrol of Chile's coastline.
A new law approved in July 2008 changed the military ranks of Venezuela, principally with regard to names, functions and commanding regulation of the armed forces. The law was sanctioned by Venezuela's National Assembly.
First sergeant is typically a senior non-commissioned officer rank, used in many countries.
The military ranks of the Colombian armed forces consist of the list and ordering of the different military ranks, for the Officers, Non-commissioned officers (NCOs) and soldiers, seamen and airmen of the Military Forces of Colombia. The ranks are visually represented by insignias placed on the uniforms, usually at the shoulders, sleeves and shirt collars.
An officer is a person who holds a position of authority as a member of an armed force or uniformed service.
The rank insignia of the Austro-Hungarian Navy were worn on and on sleeves for navy jackets and coats, or on shoulder straps of shirts and white jackets. Officers' ranks were indicated by lines of 1.3 centimetres (0.51 in) gold braid as were senior non-commissioned officers' ranks, enlisted men's rank was indicated by white stars on their square collar flaps. Senior officers and flag officers would wear a broader gold braid line of 3.3 centimetres (1.3 in) and 5.3 centimetres (2.1 in) resp. beneath smaller lines, in addition flag officers would wear a crown on top of their sleeve insignia.
The military ranks of Portugal form the system of hierarchical relationships in the Portuguese Armed Forces.
Rank comparison chart of navies of North and South American states.
Rank comparison chart of armies/ land forces of North and South American states.
Chilean Army [1] 
Chilean Navy [2] 
Chilean Air Force [3] 
Carabineros de Chile 
Chilean Gendarmerie 
