The nineteenth year of king Nebuchadnezzar - 586 B.C., if we count from the real date of his accession (604 B.C.); but 587 B.C., if, with the Jews, we regard him as beginning to reign when he was sent by his father to recover Syria and gained the battle of Carchemish (in 605 B.C.).
Captain of the guard - literally, “the chief of the executioners” Genesis 37:36.