Collection of British Army ID discs, commonly known as "dog tags," were introduced during World War 1 and have been used by the British Army ever since. The discs were originally made of fiber and were stamped with the soldier's name, service number, regiment, and religion.
During World War 2, the design of the ID discs was updated to include two separate discs, one to be left with the body in case of death and the other to be worn by the soldier. The discs were made of a harder-wearing material, such as stainless steel
The ID discs were used to identify soldiers who were killed in action or who were missing in action, and they were also used to help identify soldiers who were wounded or taken prisoner. They were an important piece of military equipment and were often considered to be a soldier's most important possession.