Answer
The Knight of the Garter (KG), the highest order of chivalry in England, is the decoration that Milner received, signifying his knighthood. Established by King Edward III in 1348, the KG is bestowed upon individuals who have made significant contributions to the nation. Recipients of the KG are entitled to use the post-nominal letters "KG" after their names and are accorded great respect and honor within the British society.