Medicine: M*A*S*H International

Communist troops were at Saigon's gate last April and shells were exploding everywhere, but a small band of doctors continued to treat patients at battered Gia Dinh Hospital. During a recent lull in Lebanon's civil war, a medical team entered Beirut and set up an emergency clinic in an isolated Moslem enclave which had been blockaded for nine months. In Guatemala last February, the ground was still trembling when a special task force of doctors arrived to care for victims of that country's disastrous earthquake.

These courageous doctors were all volunteers and members of an extraordinary Paris-based medical organization called Médecins...