Earl Marshal of the College of Arms, the body concerned with all matters of genealogy and heraldry. In conjunction with the Lord High Constable, he had held a court, known as the Court of Chivalry, for the administration of justice in accordance with the law of arms, which was concerned with many subjects relating to military matters, such as ransom, booty and soldiers' wages, and including the misuse of armorial bearings. In 1672, the office of Marshal of England and the title of Earl Marshal of England were made hereditary in the Howard family. In a declaration made on 16 June 1673
Marshal of the air force head of state, but relinquishes the rank after completing his term in office. He can, however, be re-appointed to the rank if he later serves another term. The Duke of Edinburgh holds the ceremonial rank of a Marshal of the Royal Air Force, as well as the honorary ranks of Marshal of the Royal Australian Air Force and Marshal of the Royal New Zealand Air Force; owing to their smaller size, however, neither of the latter two air forces have ever used the rank in an operational capacity. Although the rank of Marshal of the Royal Canadian Air Force existed