A Hero of France  by Alan Furst Random House, $27.00, 234 pages, ISBN 978-0-8129-9649-4 On September 1, 1939, German Armed Forces invaded Poland with tanks, armored infantry divisions and dive bombers. Great Britain and France declared war on Germany the next day and World War II began. Poland surrendered two weeks later. The German forces occupied Poland, loaded their weapons and combat troops onto railroads, and headed west, right