Duke of Wellington in the context of "Home Secretary"

La Haye Sainte (French pronunciation: [la ɛ sɛ̃t], lit. 'The Holy Hedge', named either after Jesus' crown of thorns or a nearby bramble hedge) is a walled farmhouse compound at the foot of an escarpment near Waterloo, Belgium, on the N5 road connecting Brussels and Charleroi. It has changed very little since it played a crucial part in the Battle of Waterloo on 18 June 1815.

La Haye Sainte was defended by about 400 King's German Legion troops during the Battle of Waterloo. Being greatly outnumbered by attacking French forces, the defenders held out until the late afternoon when they retired as their ammunition had run out. If Napoleon Bonaparte's army had captured La Haye Sainte earlier in the day, he would have almost certainly broken through the allied centre and defeated the Duke of Wellington's army.

Sir Robert Peel, 2nd Baronet (5 February 1788 – 2 July 1850), was a British Conservative statesman who twice was Prime Minister of the United Kingdom (1834–1835, 1841–1846), and simultaneously was Chancellor of the Exchequer (1834–1835). He previously was Home Secretary twice (1822–1827, 1828–1830). He is regarded as the father of modern British policing, owing to his founding of the Metropolitan Police while he was Home Secretary. Peel was one of the founders of the modern Conservative Party.

The son of a wealthy textile manufacturer and politician, Peel was the first prime minister from an industrial business background. He earned a double first in classics and mathematics from Christ Church, Oxford. He entered the House of Commons in 1809 and became a rising star in the Tory Party. Peel entered the Cabinet as Home Secretary (1822–1827), where he reformed and liberalised the criminal law and created the modern police force, leading to a new type of officer known in tribute to him as "bobbies" and "peelers". After a brief period out of office he returned as Home Secretary under his political mentor the Duke of Wellington (1828–1830), also serving as Leader of the House of Commons. Initially a supporter of continued legal discrimination against Catholics, Peel reversed his stance and supported the Roman Catholic Relief Act 1829 and the 1828 repeal of the Test Act, writing, "though emancipation was a great danger, civil strife was a greater danger".

The Waterloo campaign, also known as the Belgian campaign (15 June – 8 July 1815) was fought between the French Army of the North and two Seventh Coalition armies, an Anglo-allied army and a Prussian army. Initially the French army had been commanded by Napoleon Bonaparte, but he left for Paris after the French defeat at the Battle of Waterloo. Command then rested on Marshals Soult and Grouchy, who were in turn replaced by Marshal Davout, who took command at the request of the French Provisional Government. The Anglo-allied army was commanded by the Duke of Wellington and the Prussian army by Field Marshall Graf von Blücher.

The war between France and the Seventh Coalition came when the other European Great Powers refused to recognise Napoleon as Emperor of the French upon his return from exile on the island of Elba, and declared war on him, rather than France, as they still recognised Louis XVIII as the king of France and considered Napoleon a usurper. Rather than wait for the Coalition to invade France, Napoleon decided to attack his enemies and hope to defeat them in detail before they could launch their combined and coordinated invasion. He chose to launch his first attack against the two Coalition armies cantoned in modern-day Belgium, then part of the newly formed United Kingdom of the Netherlands, but until the year before part of the First French Empire.

The Royal Academy Exhibition of 1815 was the annual Summer Exhibition of the Royal Academy of Arts based in London. It was held at Somerset House from 1 May to 24 June 1815 during the Regency Era. It took place during the Hundred Days campaign after Napoleon's escape from Elba with the Battle of Waterloo taking place on 18 June shortly before the end of the exhibition.

Amongst the works on display were those celebrating the victory over Napoleon the previous year War of the Sixth Coalition. Notable amongst these were paintings by Thomas Lawrence depicting leading figures of the alliance that had defeated France in 1814. Portrait of Prince Metternich, featuring the Austrian foreign minister Klemens von Metternich. Two of the portraits, that of the Duke of Wellington and Portrait of Marshal Blücher, depicted the commanders of the Allied armies that would join forces to secure victory at Waterloo. They would both end up at the Waterloo Chamber of Windsor Castle. Lawrence also exhibited a portrait of the Prince Regent who had commissioned the paintings of the victorious allies. He is depicted in a Field-Marshal's uniform.