'Disguised' in the Bible

The king of Israel said to Jehoshaphat, "I will disguise myself and then enter the battle; but you wear your royal attire." So the king of Israel disguised himself and they entered the battle.

But Josiah did not turn back from him; he disguised himself for battle. He did not take seriously the words of Necho which he had received from God; he went to fight him in the Plain of Megiddo.