Admiral is a military rank, typically the highest or among the highest flag officers in a navy. In the armed forces of the United States and Commonwealth of Nations, an admiral—sometimes clarified as a "full admiral"—is the equivalent of a general in the army or air force. NATO codes place admirals or their equivalents at OF-9, behind only the infrequently awarded rank of fleet admirals (US) or admirals of the fleet (CON) and just above vice-admirals. In premodern contexts, admiral is also used as an informal rank for any commander-in-chief of a navy or major fleet.
Lieutenant general is a military rank used in many countries. The rank originates from the Old European System. The rank traces its origins to the Middle Ages, where the title of lieutenant general was held by the second-in-command on the battlefield, who was normally subordinate to a captain general.
Major is a senior military officer rank used in many countries. When used unhyphenated and in conjunction with no other indicators, major is one rank above captain in armies and air forces, and one rank below lieutenant colonel. It is considered the most junior of the senior officer ranks.
Sergeant (Sgt) is a rank in use by the armed forces of many countries. It is also a police rank in some police services. The alternative 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 Old French term serjant.
Counter admiral is a rank found in many navies of the world, but no longer used in English-speaking countries, where the equivalent rank is rear admiral. The term derives from the French contre-amiral. Depending on the country, it is either a one-star or two-star rank.
Captain lieutenant or captain-lieutenant is a military rank, used in a number of navies worldwide and formerly in the British Army.
Podpolkovnik is a military rank in Slavic and nearby countries which corresponds to the lieutenant colonel in the English-speaking states and military.
Senior lieutenant is a military grade between a lieutenant and a captain, often used by countries from the former Eastern Bloc. It is comparable to first lieutenant.
A junior sergeant is a military rank used in multiple militaries across the world. It is usually placed below sergeant.
Major general is a military rank used in many countries. It is derived from the older rank of sergeant major general. The disappearance of the "sergeant" in the title explains the apparent confusion of a lieutenant general outranking a major general, whereas a major outranks a lieutenant.
Rank comparison chart of armies and land forces of Asian states.
Rank comparison chart of all air forces of European states.
Captain 2nd rank is a rank used by the Russian Navy and a number of former communist states. The rank is the middle rank in the staff officer's career group. The rank is equivalent to lieutenant colonel in armies and air forces. Within NATO forces, the rank is rated as OF-4 and is equivalent to commander in English-speaking navies.
Rank comparison chart of air forces of Asian states.
Rank comparison chart of air forces non-commissioned officers and other personnel of European states.
Rank comparison chart of non-commissioned officers and other personnel for armies/ land forces of Asian states.
Chief sergeant is a rank used in the armed forces of many countries. It is also a police rank in some police forces.
Rank comparison chart of all armies of Post-Soviet states.
Rank comparison chart of enlisted for all armies of Post-Soviet states.
This page shows the lieutenant-general insignia, by country, for the rank of lieutenant general in the different branches of the armed forces.
Royal Danish Army [2] 
Royal Danish Navy [4] 
