Colonel (United Kingdom) in the context of "Group captain"

Colonel George Gawler KH (21 July 1795 – 7 May 1869) was the second Governor of South Australia, at the same time serving as Resident Commissioner, from 17 October 1838 until 15 May 1841.

Captain (Capt.) is a senior officer rank of the Royal Navy. It ranks above commander and below commodore and has a NATO ranking code of OF-5. The rank is equivalent to a colonel in the British Army and Royal Marines, and to a group captain in the Royal Air Force. There are similarly named equivalent ranks in the navies of many other countries.

Field Marshal Arthur Wellesley, 1st Duke of Wellington (né Wesley; 1 May 1769 – 14 September 1852) was an Anglo-Irish British Army officer and statesman who was one of the leading military and political figures in Britain during the early 19th century, twice serving as Prime Minister of the United Kingdom. He was one of the British commanders who ended the Anglo-Mysore wars by defeating Tipu Sultan in 1799, and among those who ended the Napoleonic Wars in a Coalition victory when the Seventh Coalition defeated Napoleon at the Battle of Waterloo in 1815.

Wellesley was born into a Protestant Ascendancy family in Dublin, in the Kingdom of Ireland. He was commissioned as an ensign in the British Army in 1787, serving in Ireland as aide-de-camp to two successive lords lieutenant of Ireland. He was also elected as a member of Parliament in the Irish House of Commons. Rising to the rank of colonel by 1796, Wellesley served in the Flanders campaign before being sent to India, where he fought in the Fourth Anglo-Mysore War, ending the conflict with a victory at Seringapatam in 1799. He was appointed governor of Seringapatam and Mysore and, as a newly appointed major-general, won a decisive victory over the Maratha Confederacy at the Battle of Assaye in 1803.

Lieutenant colonel (Lt Col) is a rank in the British Army and Royal Marines which is also used in many other Commonwealth countries. The rank is superior to major, and subordinate to colonel. The comparable Royal Navy rank is commander, and the comparable rank in the Royal Air Force and many other Commonwealth air forces is wing commander.

The rank insignia in the British Army and Royal Marines, as well as many Commonwealth countries, is a crown above a four-pointed "Bath" star, also colloquially referred to as a "pip". The crown has varied in the past with different monarchs; the current one being the Tudor Crown. Most other Commonwealth countries use the same insignia, or with the state emblem replacing the crown.

Brigadier (Brig) is a senior rank in the British Army and the Royal Marines. Brigadier is the superior rank to colonel, and subordinate to major-general. It corresponds to the rank of brigadier general in many other nations.

The rank has a NATO rank code of OF-6, placing it equivalent to the Royal Navy commodore and the Royal Air Force air commodore ranks and the brigadier general (1-star general) rank of the United States military and numerous other NATO nations.

Colonel Reginald Edward Harry Dyer, CB (9 October 1864 – 23 July 1927) was a British military officer in the Bengal Army and later the newly constituted British Indian Army. His military career began in the regular British Army, but he soon transferred to the presidency armies of India.

As a temporary brigadier-general, he was responsible for the Jallianwala Bagh massacre that took place on 13 April 1919 in Amritsar (in the province of Punjab). He has been called "the Butcher of Amritsar", because of his order to fire on a large gathering of people. The official report stated that this resulted in the killing of at least 379 people and the injuring of over a thousand more. Some submissions to the official inquiry suggested a higher number of deaths. After the massacre, he served in the Third Anglo-Afghan war, where he lifted the siege at Thal and inflicted heavy casualties on Afghans.

The Blues and Royals (Royal Horse Guards and 1st Dragoons) (RHG/D) is a cavalry regiment of the British Army, part of the Household Cavalry. The Colonel of the Regiment is Anne, Princess Royal. It is the second-most senior regiment in the British Army.