'Commander' in the Bible

Rehum the [Persian] commander [of the Samaritans] and Shimshai the scribe wrote a letter against Jerusalem to Artaxerxes the king as follows—

then wrote Rehum the [Persian] commander, Shimshai the scribe, and the rest of their associates, the judges, the lesser governors, the officials, the secretaries, the men of Erech, the Babylonians, the men of Susa, that is, the Elamites,