The Hole — Stephen Donald Huff

Humankind totters on the brink of extinction. Soon, a superior alien race will dominate Earth. Our greatest hope lies within the ranks of an elite cadre of anonymous combatants called Ghost Warriors. He is of that number. All but mortally wounded, he has crawled into a hidden hole to heal. When he rises again, alien blood will flow!He's the last survivor. And he's pissed!