"Every soldier learns in time that war is a lonely business," wrote Matthew Ridgway, one of America's great generals, who served in World War II and Korea. In the face of Ridgway's accurate observation is any soldier's sense that in battle, the man on your right or the man on your left could be the man who saves your life. Here are the stories of veterans who came to understand that, as lonely a business as war can be, the camaraderie planted in basic training and nurtured through the hardships of the battlefield is a powerful weapon against fear.