Answer
Rudel received the Knight's Cross with Golden Oak Leaves, Swords, and Diamonds during World War II. The Knight's Cross was the highest military decoration of Nazi Germany, and the Golden Oak Leaves, Swords, and Diamonds were the highest awards of the Knight's Cross. Rudel was awarded the Knight's Cross with Golden Oak Leaves, Swords, and Diamonds for his outstanding leadership and bravery during his missions.