Rich received the title of field marshal on November 29, 1757. He was colonel of various regiments, including the 8th King's Royal Irish Hussars and the 4th Regiment of Dragoons (bot hnow amalgamated into The Queen's Royal Hussars), the 13th Hussars (now amalgamated into The Light Dragoons), the 3rd Regiment of Horse (now amalgamated into The Royal Scots Dragoon Guards), the 18th Dragoons (known as Sir Robert Rich's Regiment of Dragoons, now amalgamated into The Queen's Royal Lancers), and the 1st Troop of the Horse Grenadier Guards.