I remember reading a novel when I was a child about a present day soldier, who I believe was a member of the SAS serving reborn egyptian gods who through guile overthrew all major religions.
There was a priest who used magic/whatever to control a wooden saqqara bird.
The soldiers all have vaguely magic weapons as well as rifles.
I'm fairly certain it was published in the 90s, and the cover was just a pyramid and the sun. The protagonist was a commanding officer and was seperated from his squad early in the novel. The gods appeared as characters and interacted with each other. Thats really all I can remember.