Second lieutenant is a junior commissioned officer military rank in many armed forces. The lowest officer rank, it is usually placed below lieutenant or first lieutenant.
Military ranks and rank insignia of Norway were changed June 1, 2016, with the reintroduction of the Non-Commissioned Officer Corps, and the abolishment of the one-tier officer system in place since 1975.
Ranks and insignia of NATO affiliated nations are combined military ranks and insignia used by the member countries of the North Atlantic Treaty Organization.
The comparative military ranks of Korea are the military insignia used by the two nations on the Korean Peninsula, those being the Republic of Korea Armed Forces and the Korean People's Army of the Democratic People's Republic of Korea. The United States Forces Korea personnel wear the ranks and insignia used by other service personnel of the United States Armed Forces in the territories of the United States.
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 incorporates features from 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-languages communications in Finland, e.g. in Swedish-speaking units of Finnish Defence Force. The system of ranks in the Swedish Armed Forces is slightly different.
The Ranks and insignia of the Japan Self-Defense Forces are the military insignia used by the Japan Self-Defense Forces.
The Military ranks of South Korea are the military insignia used by the Republic of Korea Armed Forces. Due to the close military cooperation and the presence of the United States Forces Korea, South Korean ranks are inspired by the United States.
The Military ranks of Romania are the military insignia used by the Romanian Armed Forces.
The Military ranks of Socialist Yugoslavia are the military insignia used by the Yugoslav People's Army.
Military rank system and military insignia of Bosnia and Herzegovina shows the military rank system and insignias used by the Army of the Republic of Bosnia and Herzegovina that existed from 1992 to 2005 and the current Armed Forces of Bosnia-Herzegovina that exists from 2006 to present. The ranks are defined in Article 155, Article 156, Article 157 and Article 158 of the Law on Service in the AFBiH.
The military ranks of Iran are the ranks used by the Islamic Republic of Iran Armed Forces (IRIAF). The armed forces are split into the Islamic Republic of Iran Army and the Islamic Revolutionary Guard Corps. The ranks used by the Law Enforcement Forces share a similar structure to the military.
The Military ranks of Serbia are the military insignia used by the current Serbian Armed Forces and historical Royal Serbian Army.
The Military ranks of Philippines are the military insignia used by the Armed Forces of the Philippines.
The Military ranks of Syria are the military insignia used by the Syrian Armed Forces. The Syrian military ranks use a rank structure similar to that of the British Armed Forces and the French Armed Forces. Commissioned officers' rank insignia are identical for the army and air force. These are gold on a bright green or black shoulder board for the army and gold on a bright blue board for the air force. Officer ranks are standard, although the highest is the equivalent of Colonel General, a rank held in 1986 only by the commander in chief and the minister of defense. Navy officer rank insignia are gold stripes worn on the lower sleeve. The highest-ranking officer in Syria's navy is the equivalent of lieutenant general. Army and air force rank for warrant officers is indicated by gold stars on an olive green shield worn on the upper left arm. Lower noncommissioned ranks are indicated by upright and inverted chevrons worn on the upper left arm.
The military ranks of Afghanistan were the military insignia used by militaries of Afghanistan throughout history.
The Military ranks of Malta are the military insignia used by the Armed Forces of Malta. Malta shares a rank structure similar to that of the United Kingdom, but has no sleeve insignia for its air wing. The Maltese armed forces inherited the rank system of the Royal Malta Artillery through its conversion to the 1st Regiment of the then Malta Land Force.
The military ranks of Spain are the military insignia used by the Spanish Armed Forces.
Commissioned officers' and enlisted rank comparison chart of all marine forces.
Qatari Emiri Land Force 
Qatar Emiri Air Force 
