Second lieutenant

Second lieutenant is a junior commissioned officer military rank in many armed forces.{{cite news |title=Second lieutenant |url=https://www.merriam-webster.com/dictionary/second%20lieutenant |access-date=1 October 2024 |work=merriam-webstar}} The lowest officer rank, it is usually placed below lieutenant or first lieutenant.

Australia

The rank of second lieutenant existed in the military forces of the Australian colonies and Australian Army until 1986.

In the colonial forces, which closely followed the practices of the British military, the rank of second lieutenant began to replace ranks such as ensign and cornet from 1871.

New appointments to the rank of second lieutenant ceased in the regular army in 1986.{{cite web |title=Archived copy |url=http://www.home.netspeed.com.au/heritagehorse/images/rank%20in%20aust%20army%202003%20extract.pdf |url-status=live |archive-url=https://web.archive.org/web/20150924031103/http://www.home.netspeed.com.au/heritagehorse/images/rank%20in%20aust%20army%202003%20extract.pdf |archive-date=2015-09-24 |access-date=2015-02-17}} Immediately prior to this change, the rank had been effectively reserved for new graduates from the Officer Cadet School, Portsea which closed in 1985. (Graduates of the Australian Defence Force Academy (ADFA) and the Royal Military College, Duntroon (RMC-D) are commissioned as lieutenants.).{{cite web |title=Commissioned Officer Ranks |url=http://www.army.gov.au/Our-people/Ranks/Officer-Ranks |url-status=dead |archive-url=https://web.archive.org/web/20160808011603/http://www.army.gov.au/Our-people/Ranks/Officer-Ranks |archive-date=8 August 2016 |access-date=18 August 2016 |publisher=Australian Army}}{{cite web |title=General Service Officer |url=http://www.defencejobs.gov.au/army/jobs/GeneralServiceOfficer/?entryTypeId=13 |url-status=dead |archive-url=https://web.archive.org/web/20160827134039/http://www.defencejobs.gov.au/army/jobs/GeneralServiceOfficer/?entryTypeId=13 |archive-date=27 August 2016 |access-date=18 August 2016 |website=Defence Jobs |publisher=Defence Force Recruiting}} The rank of second lieutenant is only appointed to officers in special appointments such as training institutions, university regiments and while under probation during training. Trainees undertaking Special Service Officer (SSO) training are appointed at their officer rank prior to undertaking the training (usually as lieutenants or captains). This is different to General Service Officer (GSO) trainees who start off at the rank of officer cadet (ADFA/Australian Army Reserve officer trainees) or staff cadet (Royal Military College, Duntroon).{{Cite web |title=Commissioned Officer Ranks | Australian Army |url=https://www.army.gov.au/our-people/australian-army-rank-structure/commissioned-officer-ranks |url-status=dead |archive-url=https://web.archive.org/web/20190115192133/https://www.army.gov.au/our-people/australian-army-rank-structure/commissioned-officer-ranks |archive-date=2019-01-15 |access-date=2019-01-15}}

Ranks equivalent to second lieutenant are acting sub-lieutenant in the Royal Australian Navy and pilot officer in the Royal Australian Air Force.

Canada

The Canadian Forces adopted the rank with insignia of a single gold ring around the service dress uniform cuff for both army and air personnel upon unification in 1968 until the late 2000s.Navy marks centennial by reinstating 'executive curl' {{Cite web |date=2 May 2010 |title=Navy marks centennial by reinstating 'executive curl' | CTV News |url=http://www.ctvnews.ca/navy-marks-centennial-by-reinstating-executive-curl-1.508191 |url-status=live |archive-url=https://web.archive.org/web/20141026051858/http://www.ctvnews.ca/navy-marks-centennial-by-reinstating-executive-curl-1.508191 |archive-date=2014-10-26 |access-date=2014-10-26}}Canadian Army goes back to the future with return to British-style ranks and designations {{Cite web |date=8 July 2013 |title=Canadian Army goes back to the future with return to British-style ranks and designations |url=https://www.thestar.com/news/canada/2013/07/08/canadian_army_goes_back_to_the_future_with_return_to_britishstyle_ranks_and_designations.html |url-status=live |archive-url=https://web.archive.org/web/20170628184822/https://www.thestar.com/news/canada/2013/07/08/canadian_army_goes_back_to_the_future_with_return_to_britishstyle_ranks_and_designations.html |archive-date=2017-06-28 |access-date=2017-09-11 |website=Toronto Star}} For a time, naval personnel used this rank but reverted to the Royal Canadian Navy rank of acting sub-lieutenant, though the CF green uniform was retained until the mid-1980s. Currently, the Canadian Army insignia for second lieutenant is a pip and the Royal Canadian Air Force insignia for lieutenant is one thick braid. The equivalent rank for the Royal Canadian Navy is acting sub-lieutenant. Also known as an Ensign in the Foot Guards units (Canadian Grenadier Guards & Governor General's Foot Guards).

France

Sous-lieutenant is the most junior commissioned rank in the modern French Army, Airforce and Gendarmerie. It dates historically from the late XVIth Century in the reign of Henry II of France. In 1674 this designation replaced that of ensign in the French infantry. By 1791 there were two sous-lieutenants in each company. After 1781 entry to this rank and beyond required four quartering of nobility - that is for all four grandparents to be recognised members of the aristocracy. The French Revolution substituted election by popular vote and later, under Napoleon, by graduation from officers' military schools or after four years of service as a sous-officer (NCO).

Until World War I sous-lieutenants were distinguished by a single gold fringed epaulette worn on the right shoulder (silver for cavalry).{{cite book|first=Andre|last=Jouineau|page=11|title=Officers and Soldiers of the French Army 1914|date=2008 |publisher=Amber Books Limited |isbn=978-2-35250-104-6}} Modern rank insignia is reduced to a single braid stripe on each shoulder strap and (when worn) kepi.{{cite book|first=Paul|last=Gaujac|page=16|title=Officiers et Soldats de L'Armee Francis 1943-1956|date=2012 |publisher=Histoire & Collections |isbn=978-2-35250-195-4}}

Indonesia

In Indonesia, "second lieutenant" is known as letnan dua (letda) which is the most junior ranked officer in the Indonesian Military. Officers in the Indonesian National Armed Forces are commissioned through one of four major commissioning programs. Upon graduation the candidates are promoted to the rank of second lieutenant, thus becoming commissioned officers. The four programs are:

National Armed Forces Academy (Akademi TNI): a four-year undergraduate program that emphasizes instruction in the arts, sciences, and professions, preparing men and women to take on the challenge of being officers in the armed forces (Army: Military Academy, Navy: Naval Academy, Air Force: Air Force Academy);
Officer Candidate School: a 28-week program that is attended by senior NCOs or warrant officers from all services;
Career Officer Program for college graduates: a 7–8 month program that is designed to recruit civilian professionals (e.g., doctors, dentists, pharmacists, psychologists) into the armed forces;
Pilot Short Service School: a 34-month program to train pilots to serve in the armed forces.

New Zealand

Like many other Commonwealth countries, the rank structures of the New Zealand Defence Force usually follow British traditions. Hence the New Zealand Army maintains a rank of second lieutenant and the Royal New Zealand Air Force has its exact equivalent, pilot officer.

However, the Royal New Zealand Navy breaks with British tradition and uses the name ensign for its most junior commissioned officer rank (rather than the usual equivalents, such as acting sub-lieutenant or second lieutenant).

United Kingdom and other Commonwealth countries {{anchor|United Kingdom}}

The rank of second lieutenant (2Lt) was introduced throughout the British Army in 1877 to replace the short-lived rank of sub-lieutenant, although it had long been used in the Royal Artillery, Royal Engineers, Fusilier and Rifle regiments. At first the rank bore no distinct insignia. The rank was abolished in 1881 but reintroduced in 1887.{{cite book |last1=Roper |first1=Michael |title=The Records of the War Office and Related Departments, 1660-1964 |date=1998 |publisher=Public Record Office |isbn=978-1-873162-45-3 |url=https://books.google.com/books?id=aKFRAQAAMAAJ |language=en|page=271}} In 1902, a single Bath star was introduced; the ranks of lieutenant and captain had their number of stars increased by one to (respectively) two and three. The rank is also used by the Royal Marines.

New British Army officers are normally commissioned as second lieutenants at the end of their commissioning course at RMA Sandhurst, and continue with specific training with their units. Progression to lieutenant rank usually occurs after about a year. In the British armed forces, second lieutenant is a rank which is not used as a form of address. Instead a second lieutenant named, for example, Smith is addressed and referred to as Mr Smith, with the exception that the alternative titles ensign (Foot Guards) and cornet (in the Blues and Royals{{Cite web |last= |title=The Household Cavalry Command Structure - Forms of Address |url=http://householdcavalry.info/strcture.html#add |url-status=live |archive-url=https://web.archive.org/web/20160325022043/http://householdcavalry.info/strcture.html#add |archive-date=25 March 2016 |access-date=18 November 2016 |website=householdcavalry.info |publisher=Enasec Ltd |quote=In The Blues And Royals, the most junior Officer rank (equivalent to 2nd Lieutenant) is known as "Cornet".}} and Queen's Royal Hussars{{Cite web |title=The Armed Forces |url=https://www.debretts.com/expertise/forms-of-address/professions/the-armed-forces/}}) are still used.

In the Royal Air Force, the comparable rank is pilot officer. The equivalent in the Royal Navy is midshipman.

United States

File:US-O1 insignia.svg.]]

In the United States, second lieutenant is the normal entry-level rank for most commissioned officers in the Army, Marine Corps, Air Force, and Space Force. It is equivalent to the rank of ensign in the Navy, Coast Guard, Public Health Service Commissioned Corps, and National Oceanic and Atmospheric Administration Commissioned Officer Corps.

In the Army and Marine Corps, a second lieutenant typically is a platoon leader who leads a platoon-size element, usually consisting of 16 to 44 soldiers or marines. A rifle platoon is composed of several squads with each squad led by a non-commissioned officer as squad leader. The second lieutenant is usually assisted by a platoon sergeant who advises and supports the platoon's commanding officer in leading the unit.

In the Army, until December 1917, the rank bore no insignia other than a brown sleeve braid on blouses and an officer's cap device and hat cord.{{citation needed|date=November 2020}} In December 1917, a gold-colored bar similar to the silver-colored bar of a first lieutenant was introduced. In U.S. military slang, the rank is sometimes called "butterbar" or "brown bar" in reference to the insignia.{{Cite book |last=Dalzell |first=Tom |url=https://books.google.com/books?id=5F-YNZRv-VMC&pg=PA154 |title=The Routledge Dictionary of Modern American Slang and Unconventional English |publisher=Taylor & Francis |year=2009 |isbn=978-0-415-37182-7 |page=154}}

Bangladesh

The rank of second lieutenant has existed in the Bangladesh Army and Bangladesh Navy since the Liberation War. It is a rank below Lieutenant and a rank above Master Warrant Officer. In the army, a second lieutenant serves as the administrative officer or staff officer in a unit.{{cite web |title=Ranks & Insignia |url=https://join.army.mil.bd/home/page/ranks-insignia |website=Bangladesh Army}} In the Navy, the rank of second lieutenant does not exist. Its equivalent is Sub-lieutenant.{{cite web |title=Rank & Insignia |url=https://joinnavy.navy.mil.bd/Rankandinsignia/ |website=Bangladesh Navy}}

Gallery

=Army=

File:08.RABDF-2LT.svg|Second lieutenant
(Antigua and Barbuda Regiment){{cite web |title=Paratus |author1=Antigua & Barbuda Defence Force |url=http://abdf.gov.ag/wp-content/uploads/2014/04/ABDF_mag_2011.pdf |publisher=Regional Publications Ltd. |access-date=2 March 2020 |pages=12–13 |archive-date=7 June 2022 |archive-url=https://web.archive.org/web/20220607174320/http://abdf.gov.ag/wp-content/uploads/2014/04/ABDF_mag_2011.pdf |url-status=dead }}

File:Australian Army OF-1a.svg|Second lieutenant
(Australian Army){{cite web |title=Badges of rank |url=https://www.defence.gov.au/images/Badges_of_rank.pdf |website=defence.gov.au |publisher=Department of Defence (Australia) |access-date=31 May 2021}}

File:Bangladesh-army-OF-1a.svg|{{lang|bn|সেকেন্ড লেফটেন্যান্ট}}
{{lang|bn-Latn|Sēkēnḍa lēphaṭēn'yānṭa}}
(Bangladesh Army){{cite web |title=Ranks & insignia |url=https://joinbangladesharmy.army.mil.bd/home/page/ranks-insignia |website=joinbangladesharmy.army.mil.bd |access-date=11 October 2020}}

File:07.BDF-2LT.svg|Second lieutenant
(Barbados Regiment){{cite web |url=https://www.youtube.com/watch?v=fDeATyAgCWE |title=Barbados Defence Force Medal Ceremony |date=18 Jul 2019 |access-date=29 October 2022 |website=YouTube |publisher=Barbados Defence Force}}

File:Belize-Army-OF-1a.svg|Second lieutenant
(Belize Defence Force)

File:Botswana-Army-OF-1a.svg|Second lieutenant
(Botswana Ground Force){{cite web |title=Ranks |url=http://www.gov.bw/en/Ministries--Authorities/Ministries/State-President/Botswana-Defence-Force-BDF/About-the-BDF1/Ranks-and-Insignia/ |url-status=dead |archive-url=https://web.archive.org/web/20160826111806/http://www.gov.bw/en/Ministries--Authorities/Ministries/State-President/Botswana-Defence-Force-BDF/About-the-BDF1/Ranks-and-Insignia/ |archive-date=26 August 2016 |publisher=Government of Botswana |access-date=22 September 2016}}

File:Brazil-Army-OF-1a.svg|{{lang|pt-BR|Segundo tenente}}
(Brazilian Army){{cite web |title=Postos e Graduações - Exército |url=https://www.eb.mil.br/postos-e-graduacoes/-/asset_publisher/DQlwhsMH8YR7/content/exercito?inheritRedirect=false&redirect=https%3A%2F%2Fwww.eb.mil.br%3A443%2Fpostos-e-graduacoes%3Fp_p_id%3D101_INSTANCE_DQlwhsMH8YR7%26p_p_lifecycle%3D0%26p_p_state%3Dnormal%26p_p_mode%3Dview%26p_p_col_id%3Dcolumn-1%26p_p_col_count%3D1 |website=eb.mil.br |publisher=Brazilian Army |access-date=7 May 2021 |language=pt |archive-date=7 May 2021 |archive-url=https://web.archive.org/web/20210507081505/https://www.eb.mil.br/postos-e-graduacoes/-/asset_publisher/DQlwhsMH8YR7/content/exercito?inheritRedirect=false&redirect=https%3A%2F%2Fwww.eb.mil.br%3A443%2Fpostos-e-graduacoes%3Fp_p_id%3D101_INSTANCE_DQlwhsMH8YR7%26p_p_lifecycle%3D0%26p_p_state%3Dnormal%26p_p_mode%3Dview%26p_p_col_id%3Dcolumn-1%26p_p_col_count%3D1 |url-status=dead }}

File:Canadian Army OF-1a.svg|Second lieutenant
{{small|({{langx|fr|Sous-lieutenant}})}}
(Canadian Army){{cite web |title=Ranks and appointment |url=https://www.canada.ca/en/services/defence/caf/military-identity-system/rank-appointment-insignia.html |website=canada.ca |date=23 November 2017 |publisher=Government of Canada |access-date=28 May 2021}}

File:Denmark-Army-OF-(D)-M11.svg|{{lang|da|Sekondløjtnant}}
(Royal Danish Army){{cite web |title=Hærens Gradstegn |url=https://www.forsvaret.dk/globalassets/fko---forsvaret/dokumenter/gradstegn/-plakater_gradstegn_haren_a2_okt_2021-.pdf |website=forsvaret.dk |publisher=Danish Defence |access-date=22 August 2023 |language=da |date=October 2021}}

File:Capona Segundo Teniente Ejercito Nacional Dominicano.svg|{{lang|es|Segundo teniente}}
(Dominican Army){{cite web |title=Insignias |url=https://www.mide.gob.do/detail.aspx?id=477&sl=96 |website=mide.gob.do |publisher=Ministry of Defense (Dominican Republic) |access-date=28 May 2021 |language=es |archive-date=26 February 2021 |archive-url=https://web.archive.org/web/20210226162440/https://www.mide.gob.do/detail.aspx?id=477&sl=96}}

File:Fijian-OF-01a.svg|Second lieutenant
(Fiji Infantry Regiment)

File:07.Gambian Army-2LT.svg|Second lieutenant
(Gambian National Army)

File:07-Ghana Army-2LT.svg|Second lieutenant
(Ghana Army)

File:Guyana Defence Force (GDF) 2nd Lieutenant rank insignia.svg|Second lieutenant
(Guyana Army){{cite book |last1=Merrill |first1=Tim |title=Guyana and Belize: country studies |date=1993 |publisher=Library of Congress |lccn=93010956 |page=138 |url=https://www.loc.gov/resource/frdcstdy.guyanabelizecoun00merr_0/?sp=176&st=text |access-date=3 June 2021}}

File:13-TNI Army-2LT.svg|{{lang|id|Letnan dua}}
(Indonesian Army){{cite web |title=Pangkat Harian |url=https://www.tni.mil.id/pages-39-pangkat-harian.html |website=tni.mil.id |access-date=4 June 2021 |archive-url=https://web.archive.org/web/20201124202839/https://www.tni.mil.id/pages-39-pangkat-harian.html |publisher=Indonesian National Armed Forces |archive-date=24 November 2020 |language=id}}

File:Ireland-Army-OF-1a.svg|Second-lieutenant
{{small|({{langx|ga|Dara-lefteanant}})}}
(Irish Army){{cite web |title=Army Rank Markings |url=http://www.military.ie/fileadmin/user_upload/images/Info_Centre/Posters/rank_markings/Army_Rank_Markings_01.png |website=military.ie |publisher=Defence Forces (Ireland) |access-date=26 May 2021 |archive-url=https://web.archive.org/web/20160425021608/http://www.military.ie/fileadmin/user_upload/images/Info_Centre/Posters/rank_markings/Army_Rank_Markings_01.png |archive-date=25 April 2016}}

File:Jamaica-Army-OF-1a.svg|Second lieutenant
(Jamaican Army){{cite web |title=BADGES OF RANK |url=https://www.jdfweb.com/badges-of-rank/ |website=Official Jamaica Defence Force Website |access-date=16 November 2019 |date=2019|archive-url=https://web.archive.org/web/20200820143541/https://www.jdfweb.com/badges-of-rank/ |archive-date=20 August 2020}}

File:07. Kenyan Army 2LT.svg|Second lieutenant
(Kenya Army){{cite web |title=KDF Ranks |url=https://mod.go.ke/kdf-ranks/ |website=mod.go.ke |publisher=Ministry of Defence - Kenya |access-date=9 December 2022}}

File:Blank.svg|Second lieutenant
(Lesotho Army){{cite web |title=Ranks in the Army |url=http://www.ldf.gov.ls/ranks.html |publisher=Lesotho Defence Force |access-date=5 May 2021}}

File:Blank.svg|Second lieutenant
(Liberian Ground Forces){{cite web |url=http://www.vertic.org/media/National%20Legislation/Liberia/LR_Defense%20Act%20of%202008.pdf |title=Defense Act of 2008 |date=3 September 2008 |page=8 |access-date=20 November 2017}}

File:07. Malawi Army - 2LT.svg|Second lieutenant
(Malawi Army)

File:08.Malta Army-2LT.svg|Second lieutenant
{{small|({{langx|mt|Sekond logutenent}})}}
(Army of Malta){{cite web |title=Rank Insignia |url=https://afm.gov.mt/en/equipment/Pages/Rank-Insignia.aspx |website=afm.gov.mt |publisher=Armed Forces of Malta |access-date=26 May 2021}}

File:07-Namibia Army-2LT.svg|Second lieutenant
(Namibian Army){{cite magazine |title=Government Notice |magazine=Government Gazette of the Republic of Namibia |date=20 August 2010 |volume=4547 |pages=99–102 |url=http://www.lac.org.na/laws/2010/4547.pdf |access-date=20 December 2021}}

File:Netherlands-Army-OF-1a.svg|{{lang|nl|Tweede luitenant}}
(Royal Netherlands Army)

File:New Zealand-Army-OF-1a.svg|Second lieutenant
(New Zealand Army){{cite web |title=Badges of Rank |url=https://nzdfpop.cwp.govt.nz/assets/Uploads/Resources/21-Update_Rank-Poster-all-services.pdf |website=nzdf.mil.nz |publisher=New Zealand Defence Force |access-date=28 July 2022}}

File:Nigeria-Army-OF-1a.svg|Second lieutenant
(Nigerian Army){{cite book |last1=Smaldone |first1=Joseph P. |editor1-last=Metz |editor1-first=Helen Chapin |editor-link=Helen Chapin Metz |title=Nigeria: a country study |series=Area Handbook |date=1992 |publisher=Library of Congress |location=Washington, D.C. |lccn=92009026 |pages=296–297 |edition=5th |url=https://www.loc.gov/resource/frdcstdy.nigeriacountryst00metz_0/?sp=340 |access-date=21 October 2021 |chapter=National Security}}

File:OF-1(A) Pakistan Army.svg|{{lang|ur|سیکنڈ لیفٹیننٹ}}
{{lang|ur-Latn|Saikanḍ lephtinent}}
(Pakistan Army){{cite web |title=Pakistan Army Ranks with Salary and Insignia |url=https://pakistanforces.com/pakistan-army-ranks/ |website=pakistanforces.com |date=26 January 2021 |access-date=27 May 2021}}

File:PNGDF Land OF-01a.svg|Second lieutenant
(Papua New Guinea Land Element)

File:07-Rwanda Army-2LT.svg|Second lieutenant
(Rwandan Land Forces){{cite web |title=RDF Insignia |url=https://www.mod.gov.rw/rdf/insignia |website=mod.gov.rw |publisher=Government of the Republic of Rwanda |access-date=12 June 2021}}

File:Belize-Army-OF-1a.svg|Second lieutenant
(SKN Regiment){{cite book |title=SAINT CHRISTOPHER AND NEVIS DEFENCE FORCE ACT |date=31 December 2009 |publisher=Government of Saint Kitts and Nevis |pages=110–111}}

File:Seychelles Army OF-01a (2018).svg|Second lieutenant
(Seychelles Army){{cite web |title=Rank structure |url=https://www.spdf.sc/rank-structure/ |website=spdf.sc |publisher=Seychelles People's Defence Forces |access-date=4 June 2021}}

File:01-RSA-OF01a.svg|Second lieutenant
(Singapore Army){{cite web |title=SAF Rank Insignias |url=https://www.mindef.gov.sg/web/portal/mindef/about-us/saf-rank-insignias |website=mindef.gov.sg |publisher=Ministry of Defence (Singapore) |access-date=7 June 2021}}

File:SAA-OF-1a.svg|Second lieutenant
(South African Army){{cite web |title=Uniform: Rank insignia |url=http://www.army.mil.za/aboutus/uniform/rankinsignia.htm |website=army.mil.za |publisher=Department of Defence (South Africa) |access-date=29 May 2021 |archive-url=https://web.archive.org/web/20201020110337/http://www.army.mil.za/aboutus/uniform/rankinsignia.htm |archive-date=20 October 2020}}

File:Sri Lanka-army-OF-1a.svg|Second lieutenant
(Sri Lanka Army){{cite web |title=Dress Regulation PDF - Part I |url=https://www.army.lk/sites/all/themes/bootstrap/common/images/images2/downloads/Dress-regulation-2019-PART-I.pdf |website=army.lk |publisher=Sri Lanka Army |pages=10-4–10-11 |date=January 2019 |access-date=20 May 2021}}

File:Nl-landmacht-tweede luitenant.svg|{{lang|nl|Tweede Luitenant}}
(Suriname Army){{cite book |last1=Dyer |first1=Gwynne |editor1-last=Keegan |editor1-first=John |title=World armies |date=1979 |publisher=Royal Military Academy |location=Sandhurst |lccn=79-9217 |page=663 |chapter-url=https://archive.org/details/worldarmies00keeg/page/662/mode/2up |chapter-url-access=registration |access-date=9 March 2022 |chapter=Surinam}}

File:08-Tanzania Army-2LT.svg|{{lang|sw|Luteni usu}}
(Tanzanian Army)

File:TaT-Army-OF-1a.svg|Second lieutenant
(Trinidad and Tobago Regiment){{cite web |title=Rank Chart (Commissioned Officers) |url=http://69.0.195.188/HQ/Our-Organisation/Ranks-Chart-(Commissioned-Officers).aspx |website=69.0.195.188 |publisher=Trinidad and Tobago Defence Force |access-date=27 May 2021 }}{{Dead link|date=November 2023 |bot=InternetArchiveBot |fix-attempted=yes }}

File:Uganda-Army-OF-1a.svg|Second lieutenant
(Ugandan Land Forces){{cite journal |title=Uganda Peoples' Defence Forces Act |journal=The Uganda Gazette |date=18 September 2019 |volume=CXII |issue=46 |pages=1851–1854 |url=https://www.updf.go.ug/Gazette.pdf |access-date=29 May 2021 |publisher=Uganda Printing and Publishing Corporation |archive-date=14 August 2021 |archive-url=https://web.archive.org/web/20210814162155/https://www.updf.go.ug/Gazette.pdf |url-status=dead }}

File:British Army OF-1a.svg|Second lieutenant
(British Army){{cite web |title=Rank structure |url=https://www.army.mod.uk/who-we-are/our-people/ranks/ |website=army.mod.uk |publisher=British Army |access-date=27 May 2021}}

File:US Army O1 (Army greens).svg|Second lieutenant
(United States Army){{Cite web |title=U.S. Army Ranks |url=https://www.army.mil/ranks/ |access-date=27 May 2021 |website=army.mil |publisher=United States Army}}

File:Blank.svg|{{lang|es|Teniente segundo}}
(National Army of Uruguay){{cite book |editor1-last=Hudson |editor1-first=Rex A. |editor2-last=Meditz |editor2-first=Sandra W. |title=Uruguay: A Country Study |date=1992 |publisher=Federal Research Division, Library of Congress |isbn=0-8444-0737-2 |pages=222–223 |edition=2nd |url=https://www.marines.mil/portals/1/Publications/Uruguay%20Study_3.pdf?ver=2012-10-11-163307-517 |access-date=13 June 2021 |chapter=Chapter 5. National Security}}

File:Blank.svg|Second lieutenant
(Zambian Army)

File:Zimbabwe-Army-OF-1a.svg|Second lieutenant
(Zimbabwe National Army){{cite book |last1=Ehrenreich |first1=Frederick |editor1-last=Nelson |editor1-first=Harold D. |title=Zimbabwe: a Country Study |series=Area Handbook |date=1983 |publisher=Library of Congress |location=Washington, D.C. |lccn=83-11946 |page=267 |edition=3rd |url=https://books.google.com/books?id=D3R0AAAAMAAJ |access-date=5 July 2022 |chapter=National Security|isbn=978-0-16-001598-4 }}

=Marines=

Generic-Navy-O1.svg|{{lang|pt|Segundo-tenente fuzileiro naval}}
(Brazilian Marine Corps)

13-TNI Navy-ENS.svg|{{lang|id|Letnan dua}}
(Indonesian Marine Corps)

Maldives Army OF-1a.svg|Second lieutenant
{{lang|dv|ލެފްޓިނަންޓް}}
(Maldivian Marine Corps){{Cite web |title=ރޭންކް ސްޓްރަކްޗަރ |url=https://mndf.gov.mv/mndf/ranks |archive-url=https://web.archive.org/web/20200229225234/https://mndf.gov.mv/mndf/ranks |archive-date=29 February 2020 |access-date=2 June 2021 |website=mndf.gov.mv |publisher=Maldives National Defence Force |language=dv}}

Generic-Navy-O1.svg|{{lang|nl|2e Luitenant}}
(Netherlands Marine Corps){{cite web |date=19 December 2016 |title=De rangonderscheidingstekens van de krijgsmacht |url=https://www.defensie.nl/binaries/defensie/documenten/brochures/2021/01/15/rangen-krijgsmacht/rangonderscheidingstekens.pdf |publisher=Ministry of Defence (Netherlands) |language=nl |access-date=18 March 2021}}

POR-Navy-OF1b.svg|{{lang|pt|Segundo-tenente fuzileiro}}
(Portuguese Marine Corps)

British Royal Marines OF-1a.svg|Second lieutenant
(Royal Marines)
(United Kingdom)

US Marine O1 shoulderboard vertical.svg|Second lieutenant
(United States Marine Corps){{Cite web |title=Ranks |url=https://www.marines.mil/Ranks/ |access-date=13 June 2021 |website=marines.mil |publisher=U.S. Marine Corps}}

=Navy=

File:Generic-Navy-O1.svg|{{lang|pt-BR|Segundo-tenente}}
(Brazilian Navy){{Cite web |date=11 July 2017 |title=Postos e Graduações |url=https://www.marinha.mil.br/postos-e-graduacoes |access-date=7 May 2021 |website=marinha.mil.br |publisher=Brazilian Navy |language=pt}}

File:Blank.svg|{{lang|pt|Segundo-tenente}}
(Navy of Guinea-Bissau)

File:13-TNI Navy-ENS.svg|{{lang|id|Letnan dua}}
(Indonesian Navy)

File:A VNN-OF-1A.svg|Second lieutenant
(Kenya Navy)

File:Malawi Navy - OF-1a.svg|Second lieutenant
(Malawi Navy)

File:Maldives-Navy-OF-1b.svg|Second lieutenant
{{lang|dv|ލެފްޓިނަންޓް}}
(Maldivian Coast Guard)

File:Malta-navy-OF-1a.svg|Second lieutenant
{{lang|mt|Sekond logutenent}}
(Maritime Squadron of Malta)

File:Generic-Navy-O3.svg|{{lang|pt|Segundo-tenente}}
(Mozambique Naval Command)

File:Peru-Navy-OF-1b.svg|{{lang|es|Teniente segundo}}
(Peruvian Navy){{Cite web |title=Grados Militares |url=https://www.ccffaa.mil.pe/cultura-militar/grados-militares/ |access-date=29 May 2021 |website=ccffaa.mil.pe |publisher=Joint Command of the Armed Forces of Peru |language=es}}

File:POR-Navy-OF1b.svg|{{lang|pt|Segundo-tenente}}
(Portuguese Navy){{Cite web |title=Os Postos |url=https://www.marinha.pt/pt/a-marinha/Paginas/postos.aspx |access-date=26 February 2021 |website=marinha.pt |language=pt}}

File:STeP OF-1b.svg|{{lang|pt|Segundo-tenente}}
(Coast Guard of São Tomé and Príncipe)

File:Seychelles Coast Guard OF-01a (2018).svg|Second lieutenant
(Seychelles Coast Guard)

File:01-RSN-OF01a.svg|Second lieutenant
(Republic of Singapore Navy)

File:POR-Navy-OF1b.svg|{{lang|pt|Segundo-tenente}}
(Timor-Leste Naval Component)

=Air Force=

File:07.Botswana Air Force-2LT.svg|Second lieutenant
(Botswana Defence Force Air Wing)

File:Segundo-TenenteFAB.gif|{{lang|pt-BR|Segundo-tenente}}
(Brazilian Air Force){{Cite web |title=Postos e Graduações |url=https://www.fab.mil.br/postosegraduacoes |access-date=7 May 2021 |website=fab.mil.br |publisher=Brazilian Air Force |language=pt}}

File:Canadian RCAF OF-1a.svg|Second lieutenant
{{lang|fr-CA|Sous-lieutenant}}
(Royal Canadian Air Force)

File:RDAF 2nd Lt.svg|{{lang|da|Sekondløjtnant}}
(Royal Danish Air Force){{Cite web |date=2021 |title=Flyvevåbnets Gradstegn |url=https://forsvaret.dk/globalassets/fko---forsvaret/dokumenter/gradstegn/-flyvevabnets_gradstegn_2021-.pdf |access-date=26 May 2021 |website=forsvaret.dk |publisher=Danish Defence |language=da}}

File:Capona segundo teniente fuerza aerea.svg|{{lang|es|Segundo teniente}}
(Dominican Air Force)

File:13-TNI Air Force-2LT.svg|{{lang|id|Letnan dua}}
(Indonesian Air Force)

File:Ireland-AirForce-OF-1a.svg|Second lieutenant
{{lang|ga|Dara-leifteanant}}
(Irish Air Corps){{Cite web |title=Air Corps Rank Markings |url=http://www.military.ie/fileadmin/user_upload/images/Info_Centre/Posters/rank_markings/Air_Corps_Ranks_01.png |archive-url=https://web.archive.org/web/20160425021558/http://www.military.ie/fileadmin/user_upload/images/Info_Centre/Posters/rank_markings/Air_Corps_Ranks_01.png |archive-date=25 April 2016 |access-date=26 May 2021 |website=military.ie |publisher=Defence Forces (Ireland)}}

File:Jamaican Air Force OF-1A.svg|Second lieutenant
(Jamaica Defence Force Air Wing)

File:07. Kenyan Air Force 2LT.svg|Second lieutenant
(Kenya Air Force)

File:Blank.svg|Second lieutenant
(Lesotho Air Squadron)

File:Blank.svg|Second lieutenant
(Liberian Air Wing)

File:Malawi Air Force - OF-1a.svg|Second lieutenant
(Malawi Air Force)

File:Netherlands-AirForce-OF-1a.svg|{{lang|nl|Tweede-luitenant}}
(Royal Netherlands Air Force)

File:PNGDF AF 2LT.png|Second lieutenant
(Papua New Guinea Air Element)

File:PAF 2LT Svc.svg|Second lieutenant
(Philippine Air Force){{Cite web |title=Ranks |url=https://www.paf.mil.ph/ranks |archive-url=https://web.archive.org/web/20201018022326/https://www.paf.mil.ph/ranks |archive-date=18 October 2020 |access-date=27 May 2021 |website=paf.mil.ph |publisher=Philippine Air Force}}

File:07-Rwanda Air Force-2LT.svg|Second lieutenant
(Rwandan Air Force)

File:01-RSAF-OF01a.svg|Second lieutenant
(Republic of Singapore Air Force)

File:Seychelles Air Force OF-01a (2018).svg|Second lieutenant
(Seychelles Air Force)

File:SAAF-OF-1a.svg|Second lieutenant
{{lang|af|Tweede luitenant}}
(South African Air Force){{Cite web |title=Rank Insignia |url=http://www.af.mil.za/uniform/rank_ins.html |archive-url=https://web.archive.org/web/20190101003057/http://www.af.mil.za/uniform/rank_ins.html |archive-date=1 January 2019 |access-date=29 May 2021 |website=af.mil.za |publisher=Department of Defence (South Africa)}}

File:08-Tanzania Air Force-2LT.svg|Second lieutenant
(Tanzania Air Force Command)

File:Uganda-AirForce-OF-1a.svg|Second lieutenant
(Uganda Air Force)

File:Uruguay-AirForce-OF-1b.svg|{{lang|es|Teniente segundo}}
(Uruguayan Air Force)

File:US Air Force O1 shoulderboard.svg|Second lieutenant
(United States Air Force){{Cite web |date=25 June 2021 |title=Air Force Instruction 36-2903 |url=https://static.e-publishing.af.mil/production/1/af_a1/publication/afi36-2903/afi36-2903.pdf |publisher=Department of the Air Force |page=108 |access-date=14 August 2021 |archive-date=14 August 2021 |archive-url=https://web.archive.org/web/20210814005058/https://static.e-publishing.af.mil/production/1/af_a1/publication/afi36-2903/afi36-2903.pdf |url-status=dead }}

File:Blank.svg|Second lieutenant
(Zambian Air Force)