1 Kings 1:5

1:5 Now Adonijah, son of David and Haggith, was promoting himself, boasting, “I will be king!” He managed to acquire chariots and horsemen, as well as fifty men to serve as his royal guard.

1 Kings 22:30

22:30 The king of Israel said to Jehoshaphat, “I will disguise myself and then enter into the battle; but you wear your royal robes.” So the king of Israel disguised himself and then entered into the battle.