**By a veteran of Lt. Col. Merritt A. Edson's battalion, and author of the Dick Winters biography Biggest Brother and coauthor of A Higher CallOn the killing ground that was the island of Guadalcanal, a 2,000-yard-long ridge rose from the jungle canopy. Behind it lay the all-important air base of Henderson Field. And if Henderson Field fell, it would mean the almost certain death or capture of all 12,500 marines on the island . . .**But the marines positio...