He was born on 25March 1778 at Hawkstone Hall near Prees, Shropshire, the fourth son of Sir John Hill, 3rd Baronet, a Shropshire farmer and landowner, and Mary, daughter and co-heir to John Chambré of Petton, Shropshire. One of his elder brothers was Rowland, later Viscount Hill.[1]
He commanded the Blues during the Peninsular War and led a brigade of cavalry at the 1813 Battle of Vitoria, for which he received the Army Gold Medal.[3] At Waterloo, Hill, while a commander of the Royal Horse Guards, was wounded when a musket ball entered his right shoulder and passed through his arm.[4] Despite the injury, Hill remained on the battlefield until close to the completion of the action.[5]
He was knighted by the Prince Regent on 29May 1812 as a proxy for his brother, Rowland, who was already a Knight Companion of the Order of the Bath.[9]
His younger brothers Clement and Thomas also followed military careers; they were all present at the Battle of Waterloo, along with their elder brother, Lord Hill.[4]