A guard is either a person or an organisation. It may be a person who looks after the safety of people or property, and/or make sure prisoners do not escape. It may also be a part of the military. It can also be an object, a fireguard for example.
... 1976)
May 21 - Fats Waller, pianist (+ 1943)
May 21 - Robert Montgomery, actor (+ 1981)
June 2 - Johnny Weissmuller, American swimmer and actor
July 12 - Deng ...