Life During Wartime - Lucius Shepard

In the jungles of Guatemala, David Mingolla is struggling to survive amongst the rotting vegetation and his despairing fellow foot soldiers. He knows he is nothing but an expendable pawn in an endless war. On R & R a few miles away from the warzone he meets Debora - an enigmatic young woman who may be working for the enemy - and stumbles into a deadly psychic conflict where the mind is the greatest weapon.