Colonel H. J. Giskes, onetime chief of German military counterespionage in The Netherlands, tells how he masterminded Operation North Pole.

LONDON CALLING NORTH POLE (208 pp.)—H. J. Giskes—British Book Centre ($3.50).

The decisive moment for Operation North Pole came at 2 p.m. on March 15, 1942. At that moment H. M. G. Lauwers, a Dutch agent of British Intelligence, sat in a German police headquarters near The Hague…