The Royal Coat of Arms is a heraldic symbol used to represent the monarchy and the nation. It features a shield divided into sections, displaying various symbols that signify the history and territories of the reigning monarch. The arms typically include elements like the lion, unicorn, and the cross of St. George, each representing different parts of the United Kingdom. The design of the Royal Coat of Arms varies depending on the monarch and the country. In the United Kingdom, it is used in official documents, government buildings, and military insignia, symbolizing the authority and unity of the British monarchy.