Lieutenant-General Sir William Inglis, KCB (1764 – 29 November 1835) was a British officer of the French Revolutionary and Napoleonic Wars.

Inglis served at several of the heaviest engagements of the Peninsular War, was wounded numerous times and earned national fame through his exhortation "Die hard 57th, die hard!" to his regiment as he lay seriously wounded behind their ranks at the height of the Battle of Albuera.

The regiment held and the battle was won and although his wounds nearly proved fatal, Inglis returned to action again two years later to see the war out as a brigadier. Post-war, Inglis was knighted and served in several military governorships including a spell as Governor of Cork, in which position he died in 1835.

Almost nothing is known of Inglis's childhood, save that he was born in 1764, the third son of Dr. William Inglis, head of the College of Surgeons, Edinburgh. His mother was Margaret Spens, daughter of Thomas Spens.^[1] He was born in Edinburgh Scotland.^[2] No details of his education are known. Indeed, the first undisputed records about him which are known are those indicating that he was commissioned into the 57th Regiment of Foot as an ensign in 1779, although he did not actually join the regiment for another two years, meeting them in New York at the height of the American Revolutionary War in 1781.^[3] Following the British defeat, Inglis and his regiment travelled to Nova Scotia and Inglis spent the next ten years in Canada.

Whilst stationed in North America, Inglis became a lieutenant in 1782 and a captain in 1785. When his unit returned to Britain in 1791, the French Revolution had occurred and Inglis was engaged during the next two years maintaining order in the Midlands.^[3] When war with France broke out in 1793, the 57th was dispatched to the army of the Duke of York during his unsuccessful campaign against the French in the Low Countries. The same year, Inglis and his men were also briefly detached to a failed expedition to Brittany, but by the time the campaign had faltered in the winter of 1794, Ingis was back in Belgium.^[3]

Participating in the siege of Nijmegen and withdrawal to Bremen during the winter of 1794/95, Inglis performed well, and despite the failure of a second expedition to Brittany in 1795, he was promoted to major. In 1796, Inglis and his regiment were posted to the West Indies, arriving in early 1796 as the only vessel of the convoy to make it safely across the Atlantic Ocean on the ship Charon.^[3] Due to the consequent paucity of soldiers, Inglis was prominently involved in the British invasion of St. Lucia and the capture of the Morne Fortuné fort. Inglis had acted as second-in-command to Sir John Moore, who admired his subordinate's abilities, and Inglis was also later engaged in the capture of the islands of Grenada and Trinidad.^[3]

Whilst in the Caribbean, Inglis had been promoted to lieutenant colonel and in 1802 returned to Britain during the Peace of Amiens. He was employed until 1804 in raising a new second battalion of the 57th and in 1804 took over command of his new unit in the Channel Islands garrison. In the islands, Inglis found his men to be lacking discipline when off duty, referring to them as "fighting villains", but was repeatedly praised for the morale and ability of his men.^[3] The regiment left the Channel Islands in 1809 after five years and was attached to Sir Arthur Wellesley's army in Portugal for service in the Peninsular War.

In Portugal, Inglis's battalion was attached to the 2nd Division's 3rd Brigade under the command General Richard Stewart, an officer whose ill-health caused responsibility for the Brigade to fall to Inglis (who had recently been promoted to colonel) days before the Battle of Busaco on 27 September 1810 as Wellesley sought to inflict a defeat on André Masséna before withdrawing behind the Lines of Torres Vedras. The action was a success and Inglis performed well, retaining command of the brigade into the following year when the British Army pursued the retreating Masséna.^[3] Inglis saw action during these operations in a skirmish at Pombal and action at Campo Mayor and Los Santos, when British forces withdrew from action in an attempt to surprise the French at the Battle of Albuera.

At the conclusion of the Peninsular War, Inglis returned to Britain and was voted thanks by both Houses of Parliament and made a Knight Commander of the Order of the Bath. He was also presented with medals for his service at Albuera, the Pyrenees and Nivelle with three clasps. During a lengthy retirement, Inglis married Mary Anne Raymond in 1822 and the couple had two sons, William and Raymond, who both later became army officers.^[3] In 1825, Inglis was promoted to lieutenant general and returned to service as Lieutenant-Governor of Kinsale in Ireland in 1827. Two years later Inglis was promoted to Governor of Cork and retained the post until his death. In 1830 he was also appointed colonel of the 57th Regiment, the unit he served with for 31 years.

Inglis died in his 71st year at Ramsgate in the County of Kent on 29 November 1835. His body was buried in the Chapter House of Canterbury Cathedral. He was survived by his wife and two sons.