General George Milner was a general officer of the British Army

British Army

The British Army is the land warfare branch of Her Majesty's Armed Forces in the United Kingdom. It came into being with the unification of the Kingdom of England and Scotland into the Kingdom of Great Britain in 1707. The new British Army incorporated Regiments that had already existed in England...

 during the late eighteenth century.

In 1776, he was appointed an Ensign

Ensign (rank)

Ensign is a junior rank of a commissioned officer in the armed forces of some countries, normally in the infantry or navy. As the junior officer in an infantry regiment was traditionally the carrier of the ensign flag, the rank itself acquired the name....

 in the 3rd Foot Guards, purchasing his lieutenantcy (nominal rank of captain) in 1778 and captaincy (nominal rank of lieutenant-colonel) in 1792. He served in Flanders through 1793 and 1794, being given the brevet rank of Colonel in 1796 and appointed as a Major-General in January 1801. From February 1800 to January 1802 he served on the staff in Jersey

Jersey

Jersey, officially the Bailiwick of Jersey is a British Crown Dependency off the coast of Normandy, France. As well as the island of Jersey itself, the bailiwick includes two groups of small islands that are no longer permanently inhabited, the Minquiers and Écréhous, and the Pierres de Lecq and...

.

In May 1801 he was appointed Major in the 3rd Guards, and Lieutenant-Colonel in January 1806, after which he retired. He was given the brevet rank of Lieutenant-General in 1808, and full general in 1819.