A great advance in wartime communication, already helping to clear the confusing Battle of the Mediterranean, was revealed last week in Electronics:
Flying over enemy territory, a reconnaissance observer spies, for example, an enemy force cunningly deployed to command a road below. The observer sketches the enemy position on a map, puts the sheet on a facsimile transmitter beside him. A few minutes later, at a U.S. base hundreds of miles away, the commanding officer pulls a sheet off a receiving machine, has a duplicate of the observer's drawing.
The observer sketches with a...