Accordingly , Pulteney 's Regiment became the 13th Regiment of Foot .
These numbers came to be increasingly used until a royal warrant of 1751 decreed that regiments should in future be known by their numbers only .
Pulteney 's Regiment became the 13th Regiment of Foot .
These numbers came to be increasingly used until a royal warrant of 1751 decreed that regiments should in future be known by their numbers only .