A Horse Guards Order of 1820 decreed 'that the Royal Marines, when acting with troops of the Line, shall take their station next to the 49th Regiment', later the Royal Berkshire Regiment. When the 10 regiments of marines, whose numbers were from 44 to 53, were disbanded in 1748, the remaining Line regiments were re-numbered and 49th was the last regiment raised before the Corps of Marines was revived in 1 755. Consequent upon the amalgamation of certain infantry regiments, the Royal Marines now take precedence after The Royal Gloucestershire, Berkshire and Wiltshire Regiment. When the Royal Navy is on parade, the Royal Marines take precedence with them on the right of the line.