Body: "Heraldry of royalty, insignia, and regalia" is the study of A heraldic badge, emblem, impresa, device, or personal device worn as a badge indicates allegiance to, or the property of, an individual or family.
Professionals of "Heraldry of royalty, insignia, and regalia" include Weightman A.E., Arthur Charles Fox Davies.
Some motivations are understand and learn from tradition and legacy.
Some subfields in "Heraldry of royalty, insignia, and regalia" include military, government, aristocracy, royalty.