In case you haven’t noticed—these A-rabs (ALL NATIONALITIES AND BRANDS) make VERY POOR SOLDIERS!!!!
Any additional backbone supplied by (Christian, Judeo-Christian, or Westernized) leadership will work wonders.
Remember Lawrence of Arabia was ONE MAN (with a bushel of gold, natch).
If they get to do some Russian-style plundering along the way that's just good fun for them.