This is a publicity stunt by the Somerset and Cornwall Light Infantry as the British Army looks to drive recruitment for the Territorial Army by imposing customs and border controls on the Tamar Bridge between Devon and Cornwall. In the Cold War era Checkpoint Charlie was the name given to the border crossing at the Berlin Wall between West and East Berlin in the then East Germany or German Democratic Republic (GDR or DDR) and made famous as a location for the exchange of spies.