A New Kind of War by Anthony Price
Lt David Audley is recruiting men for the TRR-2, an army unit which is ostensibly searching out advanced German technology in the ruins of the Reich. But TRR-2 is really hunting men. When Captain Fattorini of the Royal Engineers bumps into Audley in Delphi, he finds himself recruited. Anthony Price is also the author of Soldier No More, here Be Monsters and The Labyrinth Makers.