Doctor to the ResistanceMaine born Dr. Sumner Jack Jackson joined the British Army as a volunteer physician during World War I. After the Battle of the Somme, he married a beautiful French Red Cross nurse. When the war was over, Jackson joined the staff of the American Hospital in Paris, where he quickly became a favorite physician of such Lost Generation figures as Hemingway and Fitzgerald. During World War II, Jackson, his wife, and their teenage son joined the French