The blue shield is an emblem and an association. The emblem is a protective emblem specified in the 1954 Hague Convention for the Protection of Cultural Property in the Event of Armed Conflict, to be used to indicate protected cultural property, and personnel engaged in the protection of cultural property in armed conflict.
The Blue Shield association is a network of committees of dedicated individuals across the world that is:
committed to the protection of the world’s cultural property, and is concerned with the protection of cultural and natural heritage, tangible and intangible, in the event of armed conflict, natural- or human-made disaster.
(Article 2.1, Blue Shield Statutes 2016)