I have a few more bits of advice as well.
1) No matter how uncomfortable it may be, try to sleep with your flak jacket on.
2) Make sure you know all your tentmates and the watchmen during your sleep time.
3) Carry a pack of wet wipes, they are the substitute for showers when your in desert....
4) No matter how hot it is, wear at least two pairs of socks. Sand can cause blisters so easily....
These are just a few things i can think of, and its not always a good idea to warn the enemy when youre about to attack, considering the kinds of tricks and evil they are willing to pull. Once more, I will fervently pray, hope, and give you my best wishes, luck, and the hopes that you will have as safe journeys as possible.