The secret assistance Chile gave the British in the Falklands War is no longer a secret. Years ago, retired Chilean Air Force Gen. Fernando Matthei revealed details on how Chile provided intelligence that helped the British win the 1982 war. Now, the main British figure in that alliance has written a book describing the secret program in greater detail. Sidney Edwards, an RAF officer, was the man sent to link up with Chilean military and set up the intelligence network. In 1978, Chile and Argentina were on the brink of war over three disputed islands at the tip of South America. So, London found a willing ally in Chile. Edwards says without Chile's help, Britain may have lost the war. From radar stations in Punta Arenas, Edwards could monitor Argentine air traffic and relay those movements to London. This allowed the British to preserve valuable air-defense resources. The radar monitoring, Edwards says, was "crucial" in winning the war. After the war, Chile was thanked with British jets and other military equipment. Ironically, the Chilean leader who approved the Edwards operation, Gen. Augusto Pinochet, was arrested and held in England for a year and a half on human rights charges brought by a Spanish judge.