Commodore is a senior naval rank used in many navies which is equivalent to brigadier and air commodore. It is superior to a navy captain, but below a rear admiral. It is either regarded as the most junior of the flag officers rank or may not hold the jurisdiction of a flag officer at all depending on the officer's appointment. Non-English-speaking nations commonly use the rank of flotilla admiral, counter admiral, or senior captain as an equivalent, although counter admiral may also correspond to rear admiral lower half abbreviated as RDML.
Lieutenant commander is a commissioned officer rank in many navies. The rank is superior to a lieutenant and subordinate to a commander. The corresponding rank in most armies and air forces is major, and in the Royal Air Force and other Commonwealth air forces is squadron leader.
Second lieutenant is a junior commissioned officer military rank in many armed forces.
Commander is a common naval officer rank as well as a job title in many armies. Commander is also used as a rank or title in other formal organizations, including several police forces. In several countries this naval rank is termed frigate captain.
An aide-de-camp is a personal assistant or secretary to a person of high rank, usually a senior military, police or government officer, or to a member of a royal family or a head of state.
The Irish Army, known simply as the Army, is the land component of the Defence Forces of Ireland. Approximately 7,300 people served in the Irish Army on a permanent basis as of May 2016, and there were 1,600 active reservists, divided into two geographically organised brigades. By late September 2020, this had reduced to 6,878 permanent army personnel.
Flight lieutenant is a junior commissioned rank in air forces that use the Royal Air Force (RAF) system of ranks, especially in Commonwealth countries. It has a NATO rank code of OF-2. Flight lieutenant is abbreviated as Flt Lt in the Indian Air Force (IAF) and RAF, and as FLTLT in the Pakistan Air Force (PAF), Royal Australian Air Force (RAAF) and Royal New Zealand Air Force (RNZAF) and has sometimes also been abbreviated as F/L in many services; it has never been correctly abbreviated as "lieutenant". A flight lieutenant ranks above flying officer and below a squadron leader and is sometimes used as an English language translation of a similar rank in non-English-speaking countries.
The Army Ranger Wing (ARW) is the special operations force of the Irish Defence Forces, the military of Ireland. A branch of the Irish Army, it also selects personnel from the Naval Service and Air Corps. It serves at the behest of the Defence Forces and Government of Ireland, operating internally and overseas, and reports directly to the Chief of Staff. The ARW was established in 1980 with the primary role of counter terrorism and evolved to both special operations and counter terrorism roles from 2000 after the end of conflict in Northern Ireland. The unit is based in the Curragh Camp, County Kildare. The 2015 White Paper on Defence announced that the strength of the ARW would be considerably increased due to operational requirements at home and overseas.
General Sir Peter John Cosgrove, is a retired senior Australian Army officer who served as the 26th governor-general of Australia, in office from 2014 to 2019.
An equerry is an officer of honour. Historically, it was a senior attendant with responsibilities for the horses of a person of rank. In contemporary use, it is a personal attendant, usually upon a sovereign, a member of a royal family, or a national representative. The role is equivalent to an aide-de-camp, but the term is now prevalent only in the Commonwealth of Nations.
Field Marshal Sam Hormusji Framji Jamshedji Manekshaw, widely known as Sam Manekshaw and Sam Bahadur, was the Chief of the Army Staff of the Indian Army during the Indo-Pakistani War of 1971, and the first Indian Army officer to be promoted to the rank of field marshal. His active military career spanned four decades and five wars, beginning with service in the British Indian Army in World War II.
Air Chief Marshal Sir Allan Grant "Angus" Houston, is a retired senior officer of the Royal Australian Air Force. He served as Chief of Air Force from 20 June 2001 and then as the Chief of the Defence Force from 4 July 2005. He retired from the military on 3 July 2011.
Marshal of the Indian Air Force Arjan Singh, was a senior air officer of the Indian Air Force. He served as the 3rd Chief of the Air Staff from 1964 to 1969, leading the Air Force through the Indo-Pakistani War of 1965. He was the first and only officer of the Indian Air Force (IAF) to be promoted to five-star rank as Marshal of the Indian Air Force, equal to the army rank of Field Marshal.
General Sir Phillip Harvey Bennett, is a retired senior officer of the Australian Army who served as Chief of the Australian Defence Force from 1984 to 1987, and later as Governor of Tasmania from 1987 to 1995.
The army rank of captain is a commissioned officer rank historically corresponding to the command of a company of soldiers. The rank is also used by some air forces and marine forces, but usually refers to a more senior officer. Today, a captain is typically either the commander or second-in-command of a company or artillery battery. In the Chinese People's Liberation Army, a captain may also command a company, or be the second-in-command of a battalion.
Lieutenant General Mark Evans, is a retired senior officer in the Australian Army. He was chief of joint operations from July 2008 until his retirement in May 2011.
General David John Hurley, is an Australian former senior officer in the Australian Army who has served as the 27th governor-general of Australia since 1 July 2019. He was previously the 38th governor of New South Wales, serving from 2014 to 2019.
General Vijay Kumar Singh, PVSM, AVSM, YSM, ADC is an Indian politician and a former four-star General in the Indian Army. He is the current Minister of State in the Ministry of Road Transport and Highways and Ministry of Civil Aviation in the Second Modi ministry. He previously served as Minister of State for External Affairs, Minister of State for Development of the North-Eastern Region and Minister of State for Statistics and Programme Implementation in the First Modi ministry.
Lieutenant (abbreviated Lt, LT (U.S.), LT(USN), Lieut and LEUT, depending on nation) is a commissioned officer rank in many English-speaking nations' navies and coast guards. It is typically the most senior of junior officer ranks. In most navies, the rank's insignia may consist of two medium gold braid stripes, the uppermost stripe featuring an executive curl in many Commonwealth of Nations; or three stripes of equal or unequal width.
General Angus John Campbell, is a senior officer in the Australian Army, serving as the Chief of the Defence Force since 6 July 2018. He was previously posted as Commander Operation Sovereign Borders from September 2013 until he was appointed Chief of Army in May 2015.
Irish Army 
Captain