Independence Day: War in the Desert is a 1999 novel written by Stephen Molstad. It is a midquel/sequel tie-in the the 1996 film Independence Day.
It is the Fourth of July. Reeling from the enemy onslaught, a few surviving military pilots gather in the Saudi Arabian desert. Two of the best fliers, flight instructors Reg and Faisal, self-appointed leaders of the Saudi Forces, can barely contain their animosity when a message from the Americans forces them to unite.
A weak point has been found in the alien "City Destroyers." The air war against them was costly--but it worked!...Or did it? Too late, Reg and Faisal discover their "victory" was an illusion--part of a secret ambush that will open the planet to unimaginable horror, unless these overmatched warriors from several Middle Eastern nations can overcome long-standing hatreds and unite against the aliens in the fiercest hand-to-hand combat of the war.