Lists of the ranks of various police agencies and forces all around the world:
A knight is a person granted an honorary title of knighthood by a monarch, bishop or other political leader for service to the monarch or a Christian Church, especially in a military capacity. Historically, in Europe, knighthood was conferred upon mounted warriors. During the High Middle Ages, knighthood was considered a class of lower nobility. By the Late Middle Ages, the rank had become associated with the ideals of chivalry, a code of conduct for the perfect courtly Christian warrior. Often, a knight was a vassal who served as an elite fighter, a bodyguard or a mercenary for a lord, with payment in the form of land holdings. The lords trusted the knights, who were skilled in battle on horseback.
A non-commissioned officer (NCO) is a military officer who has not earned a commission. Non-commissioned officers usually obtain their position of authority by promotion through the enlisted ranks. In contrast, commissioned officers hold higher ranks than NCOs, have more legal responsibilities, are paid more, and often have more non-military training such as a university diploma. Commissioned officers usually earn their commissions without having risen through the enlisted ranks.
"Sergeant" is a rank in many uniformed organizations, principally military and policing forces. The alternate spelling, "serjeant", is used in The Rifles and other units that draw their heritage from the British Light Infantry. Its origin is the Latin "serviens", "one who serves", through the French term "sergent".
General of the Army is a five-star general officer and the second highest possible rank in the United States Army. A General of the Army ranks immediately above a general and is equivalent to a Fleet Admiral and a General of the Air Force. There is no established equivalent five-star rank in the other federal uniformed services. Often called a "five-star general", the rank of General of the Army has historically been reserved for wartime use and is not currently active in the U.S. military. The General of the Army insignia consisted of five 3/8th inch stars in a pentagonal pattern, with points touching. The insignia is paired with the gold and enameled United States Coat of Arms on service coat shoulder loops. The silver colored five-star metal insignia alone would be worn for use as a collar insignia of grade and on the garrison cap. Soft shoulder epaulettes with five 7/16th inch stars in silver thread and gold-threaded United States Coat of Arms on green cloth were worn with shirts and sweaters.
The shōgun was the military dictator of Japan during the period from 1185 to 1868. The shōgunate was their administration or government. In most of this period, the shōguns were the de facto rulers of the country, although nominally they were appointed by the Emperor as a ceremonial formality. The shōguns held almost absolute power over territories through military means. Nevertheless, an unusual situation occurred in the Kamakura period (1199–1333) upon the death of the first shōgun, whereby the Hōjō clan's hereditary titles of shikken (1199–1256) and tokusō (1256–1333) monopolized the shogunate as dictatorial positions, collectively known as the Regent Rule (執権政治). The shōguns during this 134-year period met the same fate as the Emperor and were reduced to figurehead status until a coup in 1333, when the shōgun was restored to power in the name of the Emperor.
Obergruppenführer was one of the Third Reich's paramilitary rank that was first created in 1932 as a rank of the Sturmabteilung (SA), and adopted by the Schutzstaffel (SS) one year later. Until April 1942, it was the highest commissioned SS rank, inferior only to Reichsführer-SS Translated as "senior group leader", the rank of Obergruppenführer was senior to Gruppenführer. A similarly named rank of Untergruppenführer existed in the SA from 1929 to 1930 and as a title until 1933. In April 1942, the new rank of SS-Oberst-Gruppenführer was created which was above Obergruppenführer and below Reichsführer-SS.
In the United States Army, United States Marine Corps, and United States Air Force, general is a four-star general officer rank, with the pay grade of O-10. General ranks above lieutenant general and below General of the Army or General of the Air Force; the Marine Corps does not have an established grade above general. General is equivalent to the rank of admiral in the other uniformed services. Since the grades of General of the Army and General of the Air Force are reserved for wartime use only, and since the Marine Corps has no five-star equivalent, the grade of general is currently considered to be the highest appointment an officer can achieve in these three services.
Corporal is a military rank in use in some form by many militaries and by some police forces or other uniformed organizations. Within NATO, each member nation's corresponding military rank of corporal is combined under the NATO-standard rank scale code OR-4. However, there are often differences in how each nation employs corporals. Some militaries don't have corporals, but may instead have a Junior Sergeant.
In the United States Army, Marine Corps, and Air Force, colonel is the most senior field grade military officer rank, immediately above the rank of lieutenant colonel and immediately below the rank of brigadier general. It is equivalent to the naval rank of captain in the other uniformed services. The pay grade for colonel is O-6.
The General of the Armies of the United States, or more commonly referred to as General of the Armies, is the highest possible rank in the United States Army. The rank is informally equated to that of a six-star general or Generalissimo and is currently one of the two highest possible operational ranks in the United States Armed Forces. Promotion to this rank requires congressional legislation, approval by the President, and an order from the Secretary of the Army.
A commander-in-chief, also sometimes called supreme commander, or chief commander, is the person or body that exercises supreme operational command and control over a nation's military forces. As a technical term, it refers to military competencies that reside in a nation-state's executive leadership—a head of state, a head of government.