World War, STRATEGY: Cairo by Mid-July?

On a velvet-padded stool on the green grass beside the fence of the half-ruined Royal Palace in Belgrade, a Nazi officer-artist sat sketching the toppled dome of one of the Palace wings. New York Times's Correspondent Ray Brock, back on his old beat, strolled up and asked what the drawing was for. The officer told him it was for the German picture magazine Signal. Then, to Correspondent Brock's surprise, the officer suddenly became very voluble.

"I have," he said, "made pictures of The Netherlands. Perhaps you saw my sketches of Schiphol Airdrome and the Eben Emael Fortress at Liége? And...