Members of the US Space Force will be known as “guardians”, it was announced on the military service’s first birthday.

US Vice President Mike Pence said: It is my honour, on behalf of the president of the United States, to announce that henceforth the men and women of the United States Space Force will be known as guardians.

Mike Pence says soldiers, sailors, airmen, Marines and guardians will be defending our nation for generations to come.