Maneuver warfare has always held the elevated terrain as sacred. Aviators have a similar golden rule: Maintain altitude, which can be traded for speed, another virtue of air power. And at the extreme, space has become a key “domain,” as last year’s anti-satellite missile test by the Chinese reminds us. In its many forms, the “high ground” will always be critical to a strong national defense.

http://www.armedforcesjournal.com/2008/02/3608322